diff --git a/package.json b/package.json
index 783c06b..02869c7 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "scripts": {
     "start": "tsdx watch",
     "build": "tsdx build",
-    "test": "tsdx test --verbose",
+    "test": "tsdx test",
     "lint": "tsdx lint",
     "prepare": "tsdx build"
   },
diff --git a/src/common/NumberSystem.ts b/src/common/NumberSystem.ts
new file mode 100644
index 0000000..0aa53ab
--- /dev/null
+++ b/src/common/NumberSystem.ts
@@ -0,0 +1,10 @@
+export type GetKiloCount = (hundreds: number, tens: number, ones: number) => string
+export type GetKiloName = (thousandPower: number) => string
+
+export default interface NumberSystem {
+  getKiloCount: GetKiloCount,
+  getKiloName: {
+    short?: GetKiloName,
+    long?: GetKiloName,
+  }
+}
diff --git a/src/common/NumberSystemNameTable.ts b/src/common/NumberSystemNameTable.ts
new file mode 100644
index 0000000..63a75dc
--- /dev/null
+++ b/src/common/NumberSystemNameTable.ts
@@ -0,0 +1,14 @@
+export default interface NumberSystemNameTable {
+  units: string[10],
+  tenPlus: string[10],
+  tenTimes: string[10],
+  hundred: string,
+  thousand: string,
+  kiloSpecialUnits: string[10],
+  kiloUnits: string[10],
+  kiloTens: string[10],
+  kiloHundreds: string[10],
+  kiloThousand: string,
+  kiloEvenSuffix: string,
+  kiloOddSuffix: string,
+}
diff --git a/src/common/interfaces.ts b/src/common/interfaces.ts
new file mode 100644
index 0000000..e69de29
diff --git a/src/systems/de/names.json b/src/systems/de/names.json
new file mode 100644
index 0000000..e4d88e6
--- /dev/null
+++ b/src/systems/de/names.json
@@ -0,0 +1,88 @@
+{
+  "units": [
+    "zero",
+    "ein",
+    "zwei",
+    "drei",
+    "vier",
+    "fünf",
+    "sechs",
+    "sieben",
+    "acht",
+    "neun"
+  ],
+  "tenPlus": [
+    "zehn",
+    "elf",
+    "zwölf",
+    "dreizehn",
+    "vierzehn",
+    "fünfzhen",
+    "sechzehn",
+    "siebzehn",
+    "achtzehn",
+    "neunzehn"
+  ],
+  "tenTimes": [
+    "zero",
+    "zehn",
+    "zwanzig",
+    "dreißig",
+    "vierzig",
+    "fünfzig",
+    "sechzig",
+    "siebzig",
+    "achtzig",
+    "neunzig"
+  ],
+  "hundred": "hundert",
+  "thousand": "tausend",
+  "kiloSpecialUnits": [
+    "m",
+    "b",
+    "tr",
+    "quadr",
+    "quin",
+    "sex",
+    "sept",
+    "oct",
+    "non"
+  ],
+  "kiloUnits": [
+    "un",
+    "duo",
+    "tre",
+    "quattuor",
+    "quin",
+    "sex",
+    "septen",
+    "octo",
+    "novem"
+  ],
+  "kiloTens": [
+    "dec",
+    "vigin",
+    "trigin",
+    "quadragin",
+    "quinquagin",
+    "sexagin",
+    "septuagin",
+    "octogin",
+    "nonagin"
+  ],
+  "kiloHundreds": [
+    "cen",
+    "duocen",
+    "trecen",
+    "quadringen",
+    "quingen",
+    "sescen",
+    "septingen",
+    "octingen",
+    "nongen"
+  ],
+  "kiloThousand": "millia",
+  "kiloEvenSuffix": "llion",
+  "kiloOddSuffix": "lliard",
+  "and": "und"
+}
diff --git a/src/systems/en.ts b/src/systems/en.ts
new file mode 100644
index 0000000..55bdba6
--- /dev/null
+++ b/src/systems/en.ts
@@ -0,0 +1,14 @@
+import NumberSystem from '../common/NumberSystem'
+import getKiloCount from './en/getKiloCount'
+import getLongKiloName from './en/getLongKiloName'
+import getShortKiloName from './en/getShortKiloName'
+
+const en: NumberSystem = {
+  getKiloCount,
+  getKiloName: {
+    short: getShortKiloName,
+    long: getLongKiloName,
+  }
+}
+
+export default en
diff --git a/src/systems/en/base/hundredTimes.test.ts b/src/systems/en/base/hundredTimes.test.ts
new file mode 100644
index 0000000..f2b7d3e
--- /dev/null
+++ b/src/systems/en/base/hundredTimes.test.ts
@@ -0,0 +1,28 @@
+import hundredTimes from './hundredTimes'
+
+it('should exist', () => {
+  expect(hundredTimes).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof hundredTimes).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(hundredTimes).toHaveLength(1)
+})
+
+test.each`
+  value | display  | name
+  ${1}  | ${'100'} | ${'one hundred'}
+  ${2}  | ${'200'} | ${'two hundred'}
+  ${3}  | ${'300'} | ${'three hundred'}
+  ${4}  | ${'400'} | ${'four hundred'}
+  ${5}  | ${'500'} | ${'five hundred'}
+  ${6}  | ${'600'} | ${'six hundred'}
+  ${7}  | ${'700'} | ${'seven hundred'}
+  ${8}  | ${'800'} | ${'eight hundred'}
+  ${9}  | ${'900'} | ${'nine hundred'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(hundredTimes(value)).toBe(name)
+})
diff --git a/src/systems/en/base/hundredTimes.ts b/src/systems/en/base/hundredTimes.ts
new file mode 100644
index 0000000..e13daf5
--- /dev/null
+++ b/src/systems/en/base/hundredTimes.ts
@@ -0,0 +1,21 @@
+import NAMES from '../names.json'
+
+interface HundredTimes {
+  (x100: number): string
+}
+
+/**
+ * Get the name of some number in the hundreds place.
+ * @param {number} x100 - The number in the hundreds place.
+ * @returns {string} The name of the number in the hundreds place.
+ */
+const hundredTimes: HundredTimes = (x100) => (
+  x100 === 0
+    ? NAMES.units[0]
+    : [
+      NAMES.units[x100],
+      NAMES.hundred,
+    ].join(' ')
+)
+
+export default hundredTimes
diff --git a/src/systems/en/base/kilo/combiningPrefix.test.ts b/src/systems/en/base/kilo/combiningPrefix.test.ts
new file mode 100644
index 0000000..53ef7f6
--- /dev/null
+++ b/src/systems/en/base/kilo/combiningPrefix.test.ts
@@ -0,0 +1,187 @@
+import combiningPrefix from './combiningPrefix'
+
+it('should exist', () => {
+  expect(combiningPrefix).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof combiningPrefix).toBe('function')
+})
+
+it('should accept 4 arguments', () => {
+  expect(combiningPrefix).toHaveLength(4)
+})
+
+describe('on 0 in hundreds place', () => {
+  describe('on 0 in tens place', () => {
+    test.each`
+      value | display | name
+      ${1}  | ${'1'}  | ${'mi'}
+      ${2}  | ${'2'}  | ${'bi'}
+      ${3}  | ${'3'}  | ${'tri'}
+      ${4}  | ${'4'}  | ${'quadri'}
+      ${5}  | ${'5'}  | ${'quinti'}
+      ${6}  | ${'6'}  | ${'sexti'}
+      ${7}  | ${'7'}  | ${'septi'}
+      ${8}  | ${'8'}  | ${'octi'}
+      ${9}  | ${'9'}  | ${'noni'}
+    `('should return "$name" on $display', ({ value, name, }) => {
+      expect(combiningPrefix(0, 0, value)).toBe(name)
+    })
+  })
+
+  describe.each`
+    tens | tensName
+    ${1} | ${'deci'}
+    ${2} | ${'viginti'}
+    ${3} | ${'triginti'}
+    ${4} | ${'quadraginti'}
+    ${5} | ${'quinquaginti'}
+    ${6} | ${'sexaginti'}
+    ${7} | ${'septuaginti'}
+    ${8} | ${'octoginti'}
+    ${9} | ${'nonaginti'}
+  `('on $tens in tens place', ({ tens, tensName, }) => {
+    test.each`
+      ones | display
+      ${0} | ${tensName}
+      ${1} | ${'un' + tensName}
+      ${2} | ${'duo' + tensName}
+      ${3} | ${'tre' + tensName}
+      ${4} | ${'quattuor' + tensName}
+      ${5} | ${'quin' + tensName}
+      ${6} | ${'sex' + tensName}
+      ${7} | ${'septen' + tensName}
+      ${8} | ${'octo' + tensName}
+      ${9} | ${'novem' + tensName}
+    `(`should return "$display" for ${tens}$ones`, ({ ones, display, }) => {
+      expect(combiningPrefix(0, tens, ones)).toBe(display)
+    })
+  })
+})
+
+describe.each`
+  hundreds | hundredsName
+  ${1}     | ${'cen'}
+  ${2}     | ${'duocen'}
+  ${3}     | ${'trecen'}
+  ${4}     | ${'quadringen'}
+  ${5}     | ${'quingen'}
+  ${6}     | ${'sescen'}
+  ${7}     | ${'septingen'}
+  ${8}     | ${'octingen'}
+  ${9}     | ${'nongen'}
+`('on $hundreds in hundreds place', ({ hundreds, hundredsName, }) => {
+  describe.each`
+    tens | tensName
+    ${0} | ${'ti'}
+    ${1} | ${'deci'}
+    ${2} | ${'viginti'}
+    ${3} | ${'triginti'}
+    ${4} | ${'quadraginti'}
+    ${5} | ${'quinquaginti'}
+    ${6} | ${'sexaginti'}
+    ${7} | ${'septuaginti'}
+    ${8} | ${'octoginti'}
+    ${9} | ${'nonaginti'}
+  `('on $tens in tens place', ({ tens, tensName, }) => {
+    test.each`
+      ones | display
+      ${0} | ${hundredsName + tensName}
+      ${1} | ${hundredsName + 'un' + tensName}
+      ${2} | ${hundredsName + 'duo' + tensName}
+      ${3} | ${hundredsName + 'tre' + tensName}
+      ${4} | ${hundredsName + 'quattuor' + tensName}
+      ${5} | ${hundredsName + 'quin' + tensName}
+      ${6} | ${hundredsName + 'sex' + tensName}
+      ${7} | ${hundredsName + 'septen' + tensName}
+      ${8} | ${hundredsName + 'octo' + tensName}
+      ${9} | ${hundredsName + 'novem' + tensName}
+    `(`should return "$display" for ${hundreds}${tens}$ones`, ({ ones, display, }) => {
+      expect(combiningPrefix(hundreds, tens, ones)).toBe(display)
+    })
+  })
+})
+
+describe.each`
+  hundredThousands | hundredThousandsName
+  ${1}             | ${'cen'}
+  ${2}             | ${'duocen'}
+  ${3}             | ${'trecen'}
+  ${4}             | ${'quadringen'}
+  ${5}             | ${'quingen'}
+  ${6}             | ${'sescen'}
+  ${7}             | ${'septingen'}
+  ${8}             | ${'octingen'}
+  ${9}             | ${'nongen'}
+`('on $hundredThousands in hundred thousands place', ({ hundredThousands, hundredThousandsName, }) => {
+  describe.each`
+    tenThousands | tenThousandsName
+    ${0}         | ${''}
+    ${1}         | ${'dec'}
+    ${2}         | ${'vigin'}
+    ${3}         | ${'trigin'}
+    ${4}         | ${'quadragin'}
+    ${5}         | ${'quinquagin'}
+    ${6}         | ${'sexagin'}
+    ${7}         | ${'septuagin'}
+    ${8}         | ${'octogin'}
+    ${9}         | ${'nonagin'}
+  `('on $tenThousands in ten thousands place', ({ tenThousands, tenThousandsName, }) => {
+    test.each`
+      thousands | display                                          | name
+      ${0}      | ${hundredThousands + '' + tenThousands + '0000'} | ${hundredThousandsName + tenThousandsName + 'milliati'}
+      ${1000}   | ${hundredThousands + '' + tenThousands + '1000'} | ${hundredThousandsName + 'un' + tenThousandsName + 'milliati'}
+      ${2000}   | ${hundredThousands + '' + tenThousands + '2000'} | ${hundredThousandsName + 'duo' + tenThousandsName + 'milliati'}
+      ${3000}   | ${hundredThousands + '' + tenThousands + '3000'} | ${hundredThousandsName + 'tre' + tenThousandsName + 'milliati'}
+      ${4000}   | ${hundredThousands + '' + tenThousands + '4000'} | ${hundredThousandsName + 'quattuor' + tenThousandsName + 'milliati'}
+      ${5000}   | ${hundredThousands + '' + tenThousands + '5000'} | ${hundredThousandsName + 'quin' + tenThousandsName + 'milliati'}
+      ${6000}   | ${hundredThousands + '' + tenThousands + '6000'} | ${hundredThousandsName + 'sex' + tenThousandsName + 'milliati'}
+      ${7000}   | ${hundredThousands + '' + tenThousands + '7000'} | ${hundredThousandsName + 'septen' + tenThousandsName + 'milliati'}
+      ${8000}   | ${hundredThousands + '' + tenThousands + '8000'} | ${hundredThousandsName + 'octo' + tenThousandsName + 'milliati'}
+      ${9000}   | ${hundredThousands + '' + tenThousands + '9000'} | ${hundredThousandsName + 'novem' + tenThousandsName + 'milliati'}
+    `(`should return "$name" for $display`, ({ thousands, name, }) => {
+      const kiloHundreds = (
+        hundredThousands * 1000
+        + tenThousands * 100
+        + thousands / 100
+      )
+      expect(combiningPrefix(
+        kiloHundreds,
+        0,
+        0,
+      )).toBe(name)
+    })
+  })
+})
+
+test.each`
+  value | display      | name
+  ${1}  | ${'1000000'} | ${'milliamilliati'}
+  ${2}  | ${'2000000'} | ${'duomilliamilliati'}
+  ${3}  | ${'3000000'} | ${'tremilliamilliati'}
+  ${4}  | ${'4000000'} | ${'quattuormilliamilliati'}
+  ${5}  | ${'5000000'} | ${'quinmilliamilliati'}
+  ${6}  | ${'6000000'} | ${'sexmilliamilliati'}
+  ${7}  | ${'7000000'} | ${'septenmilliamilliati'}
+  ${8}  | ${'8000000'} | ${'octomilliamilliati'}
+  ${9}  | ${'9000000'} | ${'novemmilliamilliati'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(combiningPrefix(value * 10000, 0, 0)).toBe(name)
+})
+
+test.each`
+  value | display      | name
+  ${1}  | ${'1001000'} | ${'milliamilliaunmilliati'}
+  ${2}  | ${'2002000'} | ${'duomilliamilliaduomilliati'}
+  ${3}  | ${'3003000'} | ${'tremilliamilliatremilliati'}
+  ${4}  | ${'4004000'} | ${'quattuormilliamilliaquattuormilliati'}
+  ${5}  | ${'5005000'} | ${'quinmilliamilliaquinmilliati'}
+  ${6}  | ${'6006000'} | ${'sexmilliamilliasexmilliati'}
+  ${7}  | ${'7007000'} | ${'septenmilliamilliaseptenmilliati'}
+  ${8}  | ${'8008000'} | ${'octomilliamilliaoctomilliati'}
+  ${9}  | ${'9009000'} | ${'novemmilliamillianovemmilliati'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(combiningPrefix(value * 10010, 0, 0)).toBe(name)
+})
+
diff --git a/src/systems/en/base/kilo/combiningPrefix.ts b/src/systems/en/base/kilo/combiningPrefix.ts
new file mode 100644
index 0000000..32c5c96
--- /dev/null
+++ b/src/systems/en/base/kilo/combiningPrefix.ts
@@ -0,0 +1,109 @@
+import NAMES from '../../names.json'
+import ones from './ones'
+import tens from './tens'
+import hundreds from './hundreds'
+
+interface CombiningPrefix {
+  (
+    kiloHundreds: number,
+    kiloTens: number,
+    kiloOnes: number,
+    kiloPower?: number,
+  ): string,
+}
+
+const combiningPrefix: CombiningPrefix = (
+  kiloHundredsRaw,
+  kiloTens,
+  kiloOnes,
+  kiloPower = 0,
+) => {
+  let kiloHundreds = kiloHundredsRaw
+  let prefix = ''
+
+  const isMillia = kiloHundredsRaw >= 10
+  if (isMillia) {
+    prefix += combiningPrefix(
+      Math.floor(kiloHundredsRaw / 1000),
+      Math.floor(kiloHundredsRaw / 100 % 10),
+      Math.floor(kiloHundredsRaw / 10 % 10),
+      kiloPower + 1,
+    )
+    kiloHundreds = kiloHundredsRaw % 10
+  }
+
+  const hasHundreds = kiloHundreds > 0
+  if (hasHundreds) {
+    prefix += hundreds(kiloHundreds)
+  }
+
+  if (
+    (
+      kiloPower > 0
+      && (
+        (
+          kiloHundreds === 0
+          && kiloTens === 0
+          && kiloOnes > 1
+        )
+        || (
+          (
+            kiloHundreds > 0
+            || kiloTens > 0
+          )
+          && kiloOnes > 0
+        )
+        || (
+          kiloHundreds === 0
+          && kiloTens === 0
+          && kiloOnes === 1
+          && prefix.endsWith(NAMES.kiloThousand)
+        )
+      )
+    )
+  ) {
+    // http://www.isthe.com/chongo/tech/math/number/howhigh.html
+    // Section: Titanic size numbers < 10^3000003
+    prefix += ones(
+      kiloOnes,
+      false
+    )
+  }
+  if (kiloPower === 0 && kiloOnes > 0) {
+    const special = kiloHundreds === 0 && kiloTens === 0
+    prefix += ones(
+      kiloOnes,
+      special
+    )
+    if (special && [5, 6].includes(kiloOnes)) {
+      prefix += 't'
+    }
+  }
+  if (kiloTens > 0) {
+    prefix += tens(kiloTens)
+  }
+
+  if (kiloPower > 0) {
+    if (!(
+      kiloHundreds === 0
+      && kiloTens === 0
+      && kiloOnes === 0
+    )) {
+      for (let p = 0; p < kiloPower; p += 1) {
+        prefix += NAMES.kiloThousand
+      }
+    }
+    return prefix
+  }
+
+  if (
+    (kiloHundreds === 0 && kiloTens > 1)
+    || (kiloHundreds > 0 && kiloTens !== 1)
+    || kiloHundredsRaw >= 10
+  ) {
+    prefix += 't'
+  }
+  return prefix + 'i'
+}
+
+export default combiningPrefix
diff --git a/src/systems/en/base/kilo/hundreds.test.ts b/src/systems/en/base/kilo/hundreds.test.ts
new file mode 100644
index 0000000..caa97dd
--- /dev/null
+++ b/src/systems/en/base/kilo/hundreds.test.ts
@@ -0,0 +1,28 @@
+import hundreds from './hundreds'
+
+it('should exist', () => {
+  expect(hundreds).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof hundreds).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(hundreds).toHaveLength(1)
+})
+
+test.each`
+  value | display  | name
+  ${1}  | ${'100'} | ${'cen'}
+  ${2}  | ${'200'} | ${'duocen'}
+  ${3}  | ${'300'} | ${'trecen'}
+  ${4}  | ${'400'} | ${'quadringen'}
+  ${5}  | ${'500'} | ${'quingen'}
+  ${6}  | ${'600'} | ${'sescen'}
+  ${7}  | ${'700'} | ${'septingen'}
+  ${8}  | ${'800'} | ${'octingen'}
+  ${9}  | ${'900'} | ${'nongen'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(hundreds(value)).toBe(name)
+})
diff --git a/src/systems/en/base/kilo/hundreds.ts b/src/systems/en/base/kilo/hundreds.ts
new file mode 100644
index 0000000..7b261d2
--- /dev/null
+++ b/src/systems/en/base/kilo/hundreds.ts
@@ -0,0 +1,9 @@
+import NAMES from '../../names.json'
+
+interface Hundreds {
+  (kiloHundreds: number): string,
+}
+
+const hundreds: Hundreds = (kiloHundreds) => NAMES.kiloHundreds[kiloHundreds]
+
+export default hundreds
diff --git a/src/systems/en/base/kilo/ones.test.ts b/src/systems/en/base/kilo/ones.test.ts
new file mode 100644
index 0000000..8cf0aa4
--- /dev/null
+++ b/src/systems/en/base/kilo/ones.test.ts
@@ -0,0 +1,49 @@
+import ones from './ones'
+
+it('should exist', () => {
+  expect(ones).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof ones).toBe('function')
+})
+
+it('should accept 2 arguments', () => {
+  expect(ones).toHaveLength(2)
+})
+
+describe('on ordinary units', () => {
+  test.each`
+    value | display | name
+    ${0}  | ${'0'}  | ${''}
+    ${1}  | ${'1'}  | ${'un'}
+    ${2}  | ${'2'}  | ${'duo'}
+    ${3}  | ${'3'}  | ${'tre'}
+    ${4}  | ${'4'}  | ${'quattuor'}
+    ${5}  | ${'5'}  | ${'quin'}
+    ${6}  | ${'6'}  | ${'sex'}
+    ${7}  | ${'7'}  | ${'septen'}
+    ${8}  | ${'8'}  | ${'octo'}
+    ${9}  | ${'9'}  | ${'novem'}
+  `('should return "$name" on $display', ({ value, name, }) => {
+    expect(ones(value, false)).toBe(name)
+  })
+})
+
+describe('on special units', () => {
+  test.each`
+    value | display | name
+    ${0}  | ${'0'}  | ${''}
+    ${1}  | ${'1'}  | ${'m'}
+    ${2}  | ${'2'}  | ${'b'}
+    ${3}  | ${'3'}  | ${'tr'}
+    ${4}  | ${'4'}  | ${'quadr'}
+    ${5}  | ${'5'}  | ${'quin'}
+    ${6}  | ${'6'}  | ${'sex'}
+    ${7}  | ${'7'}  | ${'sept'}
+    ${8}  | ${'8'}  | ${'oct'}
+    ${9}  | ${'9'}  | ${'non'}
+  `('should return "$name" on $display', ({ value, name, }) => {
+    expect(ones(value, true)).toBe(name)
+  })
+})
diff --git a/src/systems/en/base/kilo/ones.ts b/src/systems/en/base/kilo/ones.ts
new file mode 100644
index 0000000..0e6fa8f
--- /dev/null
+++ b/src/systems/en/base/kilo/ones.ts
@@ -0,0 +1,13 @@
+import NAMES from '../../names.json'
+
+interface Ones {
+  (kiloOnes: number, special: boolean): string,
+}
+
+const ones: Ones = (kiloOnes, special = false) => (
+  special
+    ? NAMES.kiloSpecialUnits[kiloOnes]
+    : NAMES.kiloUnits[kiloOnes]
+)
+
+export default ones
diff --git a/src/systems/en/base/kilo/tens.test.ts b/src/systems/en/base/kilo/tens.test.ts
new file mode 100644
index 0000000..f6984ac
--- /dev/null
+++ b/src/systems/en/base/kilo/tens.test.ts
@@ -0,0 +1,28 @@
+import tens from './tens'
+
+it('should exist', () => {
+  expect(tens).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof tens).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(tens).toHaveLength(1)
+})
+
+test.each`
+  value | display | name
+  ${1}  | ${'10'} | ${'dec'}
+  ${2}  | ${'20'} | ${'vigin'}
+  ${3}  | ${'30'} | ${'trigin'}
+  ${4}  | ${'40'} | ${'quadragin'}
+  ${5}  | ${'50'} | ${'quinquagin'}
+  ${6}  | ${'60'} | ${'sexagin'}
+  ${7}  | ${'70'} | ${'septuagin'}
+  ${8}  | ${'80'} | ${'octogin'}
+  ${9}  | ${'90'} | ${'nonagin'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(tens(value)).toBe(name)
+})
diff --git a/src/systems/en/base/kilo/tens.ts b/src/systems/en/base/kilo/tens.ts
new file mode 100644
index 0000000..bfe97e0
--- /dev/null
+++ b/src/systems/en/base/kilo/tens.ts
@@ -0,0 +1,9 @@
+import NAMES from '../../names.json'
+
+interface Tens {
+  (kiloTens: number): string,
+}
+
+const tens: Tens = (kiloTens) => NAMES.kiloTens[kiloTens]
+
+export default tens
diff --git a/src/systems/en/base/ones.test.ts b/src/systems/en/base/ones.test.ts
new file mode 100644
index 0000000..6f722ab
--- /dev/null
+++ b/src/systems/en/base/ones.test.ts
@@ -0,0 +1,30 @@
+import ones from './ones'
+
+it('should exist', () => {
+  expect(ones).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof ones).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(ones).toHaveLength(1)
+})
+
+test.each`
+  value | display | name
+  ${0}  | ${'0'}  | ${'zero'}
+  ${1}  | ${'1'}  | ${'one'}
+  ${2}  | ${'2'}  | ${'two'}
+  ${3}  | ${'3'}  | ${'three'}
+  ${4}  | ${'4'}  | ${'four'}
+  ${5}  | ${'5'}  | ${'five'}
+  ${6}  | ${'6'}  | ${'six'}
+  ${7}  | ${'7'}  | ${'seven'}
+  ${8}  | ${'8'}  | ${'eight'}
+  ${9}  | ${'9'}  | ${'nine'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(ones(value)).toBe(name)
+})
+
diff --git a/src/systems/en/base/ones.ts b/src/systems/en/base/ones.ts
new file mode 100644
index 0000000..f63ea33
--- /dev/null
+++ b/src/systems/en/base/ones.ts
@@ -0,0 +1,14 @@
+import NAMES from '../names.json'
+
+interface Ones {
+  (x1: number): string
+}
+
+/**
+ * Get the name of some number in the ones place.
+ * @param {number} x1 - The number in the ones place.
+ * @returns {string} The name of the number in the ones place.
+ */
+const ones: Ones = (x1) => NAMES.units[x1]
+
+export default ones
diff --git a/src/systems/en/base/tenPlus.test.ts b/src/systems/en/base/tenPlus.test.ts
new file mode 100644
index 0000000..a8cf9ca
--- /dev/null
+++ b/src/systems/en/base/tenPlus.test.ts
@@ -0,0 +1,29 @@
+import tenPlus from './tenPlus'
+
+it('should exist', () => {
+  expect(tenPlus).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof tenPlus).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(tenPlus).toHaveLength(1)
+})
+
+test.each`
+  value | display | name
+  ${0}  | ${'10'} | ${'ten'}
+  ${1}  | ${'11'} | ${'eleven'}
+  ${2}  | ${'12'} | ${'twelve'}
+  ${3}  | ${'13'} | ${'thirteen'}
+  ${4}  | ${'14'} | ${'fourteen'}
+  ${5}  | ${'15'} | ${'fifteen'}
+  ${6}  | ${'16'} | ${'sixteen'}
+  ${7}  | ${'17'} | ${'seventeen'}
+  ${8}  | ${'18'} | ${'eighteen'}
+  ${9}  | ${'19'} | ${'nineteen'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(tenPlus(value)).toBe(name)
+})
diff --git a/src/systems/en/base/tenPlus.ts b/src/systems/en/base/tenPlus.ts
new file mode 100644
index 0000000..fe87a0d
--- /dev/null
+++ b/src/systems/en/base/tenPlus.ts
@@ -0,0 +1,14 @@
+import NAMES from '../names.json'
+
+interface TenPlus {
+  (ones: number): string
+}
+
+/**
+ * Get the name of some number plus ten.
+ * @param {number} x1 - The number in the ones place.
+ * @returns {string} The name of the number plus ten.
+ */
+const tenPlus: TenPlus = (x1) => NAMES.tenPlus[x1]
+
+export default tenPlus
diff --git a/src/systems/en/base/tenTimes.test.ts b/src/systems/en/base/tenTimes.test.ts
new file mode 100644
index 0000000..fef4f8b
--- /dev/null
+++ b/src/systems/en/base/tenTimes.test.ts
@@ -0,0 +1,28 @@
+import tenTimes from './tenTimes'
+
+it('should exist', () => {
+  expect(tenTimes).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof tenTimes).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(tenTimes).toHaveLength(1)
+})
+
+test.each`
+  value | display | name
+  ${1}  | ${'10'} | ${'ten'}
+  ${2}  | ${'20'} | ${'twenty'}
+  ${3}  | ${'30'} | ${'thirty'}
+  ${4}  | ${'40'} | ${'forty'}
+  ${5}  | ${'50'} | ${'fifty'}
+  ${6}  | ${'60'} | ${'sixty'}
+  ${7}  | ${'70'} | ${'seventy'}
+  ${8}  | ${'80'} | ${'eighty'}
+  ${9}  | ${'90'} | ${'ninety'}
+`('should return "$name" on $display', ({ value, name, }) => {
+  expect(tenTimes(value)).toBe(name)
+})
diff --git a/src/systems/en/base/tenTimes.ts b/src/systems/en/base/tenTimes.ts
new file mode 100644
index 0000000..7366877
--- /dev/null
+++ b/src/systems/en/base/tenTimes.ts
@@ -0,0 +1,14 @@
+import NAMES from '../names.json'
+
+interface TenTimes {
+  (x10: number): string
+}
+
+/**
+ * Get the name of some number in the tens place.
+ * @param {number} x10 - The number in the tens place.
+ * @returns {string} The name of the number in the tens place.
+ */
+const tenTimes: TenTimes = (x10) => NAMES.tenTimes[x10]
+
+export default tenTimes
diff --git a/src/systems/en/short/getHundredName.test.ts b/src/systems/en/construct/tens.test.ts
similarity index 51%
rename from src/systems/en/short/getHundredName.test.ts
rename to src/systems/en/construct/tens.test.ts
index f2441a8..636a52d 100644
--- a/src/systems/en/short/getHundredName.test.ts
+++ b/src/systems/en/construct/tens.test.ts
@@ -1,15 +1,15 @@
-import getHundredName from './getHundredName'
+import tensFn from './tens'
 
 it('should exist', () => {
-  expect(getHundredName).toBeDefined()
+  expect(tensFn).toBeDefined()
 })
 
 it('should be a callable', () => {
-  expect(typeof getHundredName).toBe('function')
+  expect(typeof tensFn).toBe('function')
 })
 
 it('should accept 2 arguments', () => {
-  expect(getHundredName).toHaveLength(2)
+  expect(tensFn).toHaveLength(2)
 })
 
 describe('on 0 in tens place', () => {
@@ -26,7 +26,7 @@ describe('on 0 in tens place', () => {
     ${8} | ${'eight'}
     ${9} | ${'nine'}
   `(`should return "$onesName" for $ones`, ({ ones, onesName, }) => {
-    expect(getHundredName(0, ones)).toBe(onesName)
+    expect(tensFn(0, ones)).toBe(onesName)
   })
 })
 
@@ -44,38 +44,37 @@ describe('on 1 in tens place', () => {
     ${8} | ${'eighteen'}
     ${9} | ${'nineteen'}
   `(`should return "$tenPlusName" for 1$ones`, ({ ones, tenPlusName, }) => {
-    expect(getHundredName(1, ones)).toBe(tenPlusName)
+    expect(tensFn(1, ones)).toBe(tenPlusName)
   })
 })
 
 describe.each`
-  tens | tensName
-  ${2} | ${'twenty'}
-  ${3} | ${'thirty'}
-  ${4} | ${'forty'}
-  ${5} | ${'fifty'}
-  ${6} | ${'sixty'}
-  ${7} | ${'seventy'}
-  ${8} | ${'eighty'}
-  ${9} | ${'ninety'}
-`('on $tens in tens place', ({ tens, tensName, }) => {
+    tens | tensName
+    ${2} | ${'twenty'}
+    ${3} | ${'thirty'}
+    ${4} | ${'forty'}
+    ${5} | ${'fifty'}
+    ${6} | ${'sixty'}
+    ${7} | ${'seventy'}
+    ${8} | ${'eighty'}
+    ${9} | ${'ninety'}
+  `('on $tens in tens place', ({ tens, tensName, }) => {
   test.each`
-    ones | onesName
-    ${0} | ${''}
-    ${1} | ${' one'}
-    ${2} | ${' two'}
-    ${3} | ${' three'}
-    ${4} | ${' four'}
-    ${5} | ${' five'}
-    ${6} | ${' six'}
-    ${7} | ${' seven'}
-    ${8} | ${' eight'}
-    ${9} | ${' nine'}
-  `(`should return "${tensName}$onesName" for ${tens}$ones`, ({ ones, onesName, }) => {
-    expect(getHundredName(tens, ones)).toBe([
+      ones | onesName
+      ${0} | ${''}
+      ${1} | ${' one'}
+      ${2} | ${' two'}
+      ${3} | ${' three'}
+      ${4} | ${' four'}
+      ${5} | ${' five'}
+      ${6} | ${' six'}
+      ${7} | ${' seven'}
+      ${8} | ${' eight'}
+      ${9} | ${' nine'}
+    `(`should return "${tensName}$onesName" for ${tens}$ones`, ({ ones, onesName, }) => {
+    expect(tensFn(tens, ones)).toBe([
       tensName,
       onesName
     ].join(''))
   })
 })
-
diff --git a/src/systems/en/construct/tens.ts b/src/systems/en/construct/tens.ts
new file mode 100644
index 0000000..04e53fc
--- /dev/null
+++ b/src/systems/en/construct/tens.ts
@@ -0,0 +1,33 @@
+import ones from '../base/ones'
+import tenPlus from '../base/tenPlus'
+import getBaseTenTimesName from '../base/tenTimes'
+
+interface Tens {
+  (x10: number, x1: number): string,
+}
+
+const tens: Tens = (x10, x1) => {
+  switch (x10) {
+    case 0:
+      return ones(x1)
+    case 1:
+      if (x1 > 0) {
+        return tenPlus(x1)
+      }
+      break
+    default:
+      break
+  }
+
+  return (
+    x1 > 0
+      ? [
+        getBaseTenTimesName(x10),
+        ones(x1),
+      ]
+      .join(' ')
+      : getBaseTenTimesName(x10)
+  )
+}
+
+export default tens
diff --git a/src/systems/en/getKiloCount.test.ts b/src/systems/en/getKiloCount.test.ts
new file mode 100644
index 0000000..495cc71
--- /dev/null
+++ b/src/systems/en/getKiloCount.test.ts
@@ -0,0 +1,100 @@
+import getKiloCount from './getKiloCount'
+
+it('should exist', () => {
+  expect(getKiloCount).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof getKiloCount).toBe('function')
+})
+
+it('should accept 3 arguments', () => {
+  expect(getKiloCount).toHaveLength(3)
+})
+
+describe.each`
+  hundreds | hundredsName
+  ${1}     | ${'one hundred'}
+  ${2}     | ${'two hundred'}
+  ${3}     | ${'three hundred'}
+  ${4}     | ${'four hundred'}
+  ${5}     | ${'five hundred'}
+  ${6}     | ${'six hundred'}
+  ${7}     | ${'seven hundred'}
+  ${8}     | ${'eight hundred'}
+  ${9}     | ${'nine hundred'}
+`('on $hundreds in hundreds place', ({ hundreds, hundredsName, }) => {
+  describe('on 0 in tens place', () => {
+    test.each`
+      ones | onesName
+      ${0} | ${''}
+      ${1} | ${' one'}
+      ${2} | ${' two'}
+      ${3} | ${' three'}
+      ${4} | ${' four'}
+      ${5} | ${' five'}
+      ${6} | ${' six'}
+      ${7} | ${' seven'}
+      ${8} | ${' eight'}
+      ${9} | ${' nine'}
+    `(`should return "${hundredsName}$onesName" for ${hundreds}0$ones`, ({ ones, onesName, }) => {
+        expect(getKiloCount(hundreds, 0, ones)).toBe([
+          hundredsName,
+          onesName
+        ].join(''))
+      })
+    })
+
+  describe('on 1 in tens place', () => {
+    test.each`
+      ones | tenPlusName
+      ${0} | ${' ten'}
+      ${1} | ${' eleven'}
+      ${2} | ${' twelve'}
+      ${3} | ${' thirteen'}
+      ${4} | ${' fourteen'}
+      ${5} | ${' fifteen'}
+      ${6} | ${' sixteen'}
+      ${7} | ${' seventeen'}
+      ${8} | ${' eighteen'}
+      ${9} | ${' nineteen'}
+    `(`should return "${hundredsName}$tenPlusName" for ${hundreds}1$ones`, ({ ones, tenPlusName, }) => {
+        expect(getKiloCount(hundreds, 1, ones)).toBe([
+          hundredsName,
+          tenPlusName
+        ].join(''))
+      })
+    })
+
+  describe.each`
+    tens | tensName
+    ${2} | ${' twenty'}
+    ${3} | ${' thirty'}
+    ${4} | ${' forty'}
+    ${5} | ${' fifty'}
+    ${6} | ${' sixty'}
+    ${7} | ${' seventy'}
+    ${8} | ${' eighty'}
+    ${9} | ${' ninety'}
+  `('on $tens in tens place', ({ tens, tensName, }) => {
+    test.each`
+      ones | onesName
+      ${0} | ${''}
+      ${1} | ${' one'}
+      ${2} | ${' two'}
+      ${3} | ${' three'}
+      ${4} | ${' four'}
+      ${5} | ${' five'}
+      ${6} | ${' six'}
+      ${7} | ${' seven'}
+      ${8} | ${' eight'}
+      ${9} | ${' nine'}
+    `(`should return "${hundredsName}${tensName}$onesName" for ${hundreds}${tens}$ones`, ({ ones, onesName, }) => {
+      expect(getKiloCount(hundreds, tens, ones)).toBe([
+        hundredsName,
+        tensName,
+        onesName
+      ].join(''))
+    })
+  })
+})
diff --git a/src/systems/en/getKiloCount.ts b/src/systems/en/getKiloCount.ts
new file mode 100644
index 0000000..c4c84f9
--- /dev/null
+++ b/src/systems/en/getKiloCount.ts
@@ -0,0 +1,24 @@
+import { GetKiloCount, } from '../../common/NumberSystem'
+import constructTens from './construct/tens'
+import hundredTimes from './base/hundredTimes'
+
+const getKiloCount: GetKiloCount = (
+  x100,
+  x10,
+  x1
+) => {
+  if (x100 < 1) {
+    return constructTens(x10, x1)
+  }
+
+  if (x10 === 0 && x1 === 0) {
+    return hundredTimes(x100)
+  }
+  return [
+    hundredTimes(x100),
+    constructTens(x10, x1),
+  ]
+    .join(' ')
+}
+
+export default getKiloCount
diff --git a/src/systems/en/getLongKiloName.test.ts b/src/systems/en/getLongKiloName.test.ts
new file mode 100644
index 0000000..44d12c7
--- /dev/null
+++ b/src/systems/en/getLongKiloName.test.ts
@@ -0,0 +1,129 @@
+import getKiloName from './getLongKiloName'
+
+it('should exist', () => {
+  expect(getKiloName).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof getKiloName).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(getKiloName).toHaveLength(1)
+})
+
+test.each`
+  thousandPower | name
+  ${0}          | ${''}
+  ${1}          | ${'thousand'}
+  ${2}          | ${'million'}
+  ${3}          | ${'thousand million'}
+  ${4}          | ${'billion'}
+  ${5}          | ${'thousand billion'}
+  ${6}          | ${'trillion'}
+  ${7}          | ${'thousand trillion'}
+  ${8}          | ${'quadrillion'}
+  ${9}          | ${'thousand quadrillion'}
+  ${10}         | ${'quintillion'}
+  ${11}         | ${'thousand quintillion'}
+  ${12}         | ${'sextillion'}
+  ${13}         | ${'thousand sextillion'}
+  ${14}         | ${'septillion'}
+  ${15}         | ${'thousand septillion'}
+  ${16}         | ${'octillion'}
+  ${17}         | ${'thousand octillion'}
+  ${18}         | ${'nonillion'}
+  ${19}         | ${'thousand nonillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${20}         | ${'decillion'}
+  ${40}         | ${'vigintillion'}
+  ${60}         | ${'trigintillion'}
+  ${80}         | ${'quadragintillion'}
+  ${100}        | ${'quinquagintillion'}
+  ${120}        | ${'sexagintillion'}
+  ${140}        | ${'septuagintillion'}
+  ${160}        | ${'octogintillion'}
+  ${180}        | ${'nonagintillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${200}        | ${'centillion'}
+  ${400}        | ${'duocentillion'}
+  ${600}        | ${'trecentillion'}
+  ${800}        | ${'quadringentillion'}
+  ${1000}       | ${'quingentillion'}
+  ${1200}       | ${'sescentillion'}
+  ${1400}       | ${'septingentillion'}
+  ${1600}       | ${'octingentillion'}
+  ${1800}       | ${'nongentillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${2000}       | ${'milliatillion'}
+  ${4000}       | ${'duomilliatillion'}
+  ${6000}       | ${'tremilliatillion'}
+  ${8000}       | ${'quattuormilliatillion'}
+  ${10000}      | ${'quinmilliatillion'}
+  ${12000}      | ${'sexmilliatillion'}
+  ${14000}      | ${'septenmilliatillion'}
+  ${16000}      | ${'octomilliatillion'}
+  ${18000}      | ${'novemmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${20000}      | ${'decmilliatillion'}
+  ${40000}      | ${'viginmilliatillion'}
+  ${60000}      | ${'triginmilliatillion'}
+  ${80000}      | ${'quadraginmilliatillion'}
+  ${100000}     | ${'quinquaginmilliatillion'}
+  ${120000}     | ${'sexaginmilliatillion'}
+  ${140000}     | ${'septuaginmilliatillion'}
+  ${160000}     | ${'octoginmilliatillion'}
+  ${180000}     | ${'nonaginmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${200000}     | ${'cenmilliatillion'}
+  ${400000}     | ${'duocenmilliatillion'}
+  ${600000}     | ${'trecenmilliatillion'}
+  ${800000}     | ${'quadringenmilliatillion'}
+  ${1000000}    | ${'quingenmilliatillion'}
+  ${1200000}    | ${'sescenmilliatillion'}
+  ${1400000}    | ${'septingenmilliatillion'}
+  ${1600000}    | ${'octingenmilliatillion'}
+  ${1800000}    | ${'nongenmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${2000000}    | ${'milliamilliatillion'}
+  ${4000000}    | ${'duomilliamilliatillion'}
+  ${6000000}    | ${'tremilliamilliatillion'}
+  ${8000000}    | ${'quattuormilliamilliatillion'}
+  ${10000000}   | ${'quinmilliamilliatillion'}
+  ${12000000}   | ${'sexmilliamilliatillion'}
+  ${14000000}   | ${'septenmilliamilliatillion'}
+  ${16000000}   | ${'octomilliamilliatillion'}
+  ${18000000}   | ${'novemmilliamilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
diff --git a/src/systems/en/getLongKiloName.ts b/src/systems/en/getLongKiloName.ts
new file mode 100644
index 0000000..e4d290e
--- /dev/null
+++ b/src/systems/en/getLongKiloName.ts
@@ -0,0 +1,29 @@
+import { GetKiloName, } from '../../common/NumberSystem'
+import NAMES from './names.json'
+import getKiloCombiningPrefix from './base/kilo/combiningPrefix'
+
+const getLongKiloName: GetKiloName = thousandPower => {
+  if (thousandPower === 0) {
+    return ''
+  }
+  if (thousandPower === 1) {
+    return NAMES.thousand
+  }
+  const kilo = thousandPower
+  const kiloHundreds = Math.floor(kilo / 2 / 100)
+  const kiloTens = Math.floor(kilo / 2 / 10 % 10)
+  const kiloOnes = Math.floor(kilo / 2 % 10)
+  const baseKiloName = getKiloCombiningPrefix(
+    kiloHundreds,
+    kiloTens,
+    kiloOnes
+  ) + NAMES.kiloEvenSuffix
+
+  return (
+    thousandPower % 2 === 0
+      ? baseKiloName
+      : NAMES.thousand + ' ' + baseKiloName
+  )
+}
+
+export default getLongKiloName
diff --git a/src/systems/en/getShortKiloName.test.ts b/src/systems/en/getShortKiloName.test.ts
new file mode 100644
index 0000000..1047bd9
--- /dev/null
+++ b/src/systems/en/getShortKiloName.test.ts
@@ -0,0 +1,120 @@
+import getKiloName from './getShortKiloName'
+
+it('should exist', () => {
+  expect(getKiloName).toBeDefined()
+})
+
+it('should be a callable', () => {
+  expect(typeof getKiloName).toBe('function')
+})
+
+it('should accept 1 argument', () => {
+  expect(getKiloName).toHaveLength(1)
+})
+
+test.each`
+  thousandPower | name
+  ${0}          | ${''}
+  ${1}          | ${'thousand'}
+  ${2}          | ${'million'}
+  ${3}          | ${'billion'}
+  ${4}          | ${'trillion'}
+  ${5}          | ${'quadrillion'}
+  ${6}          | ${'quintillion'}
+  ${7}          | ${'sextillion'}
+  ${8}          | ${'septillion'}
+  ${9}          | ${'octillion'}
+  ${10}         | ${'nonillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${11}         | ${'decillion'}
+  ${21}         | ${'vigintillion'}
+  ${31}         | ${'trigintillion'}
+  ${41}         | ${'quadragintillion'}
+  ${51}         | ${'quinquagintillion'}
+  ${61}         | ${'sexagintillion'}
+  ${71}         | ${'septuagintillion'}
+  ${81}         | ${'octogintillion'}
+  ${91}         | ${'nonagintillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${101}        | ${'centillion'}
+  ${201}        | ${'duocentillion'}
+  ${301}        | ${'trecentillion'}
+  ${401}        | ${'quadringentillion'}
+  ${501}        | ${'quingentillion'}
+  ${601}        | ${'sescentillion'}
+  ${701}        | ${'septingentillion'}
+  ${801}        | ${'octingentillion'}
+  ${901}        | ${'nongentillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${1001}       | ${'milliatillion'}
+  ${2001}       | ${'duomilliatillion'}
+  ${3001}       | ${'tremilliatillion'}
+  ${4001}       | ${'quattuormilliatillion'}
+  ${5001}       | ${'quinmilliatillion'}
+  ${6001}       | ${'sexmilliatillion'}
+  ${7001}       | ${'septenmilliatillion'}
+  ${8001}       | ${'octomilliatillion'}
+  ${9001}       | ${'novemmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${10001}      | ${'decmilliatillion'}
+  ${20001}      | ${'viginmilliatillion'}
+  ${30001}      | ${'triginmilliatillion'}
+  ${40001}      | ${'quadraginmilliatillion'}
+  ${50001}      | ${'quinquaginmilliatillion'}
+  ${60001}      | ${'sexaginmilliatillion'}
+  ${70001}      | ${'septuaginmilliatillion'}
+  ${80001}      | ${'octoginmilliatillion'}
+  ${90001}      | ${'nonaginmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${100001}     | ${'cenmilliatillion'}
+  ${200001}     | ${'duocenmilliatillion'}
+  ${300001}     | ${'trecenmilliatillion'}
+  ${400001}     | ${'quadringenmilliatillion'}
+  ${500001}     | ${'quingenmilliatillion'}
+  ${600001}     | ${'sescenmilliatillion'}
+  ${700001}     | ${'septingenmilliatillion'}
+  ${800001}     | ${'octingenmilliatillion'}
+  ${900001}     | ${'nongenmilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
+
+test.each`
+  thousandPower | name
+  ${1000001}    | ${'milliamilliatillion'}
+  ${2000001}    | ${'duomilliamilliatillion'}
+  ${3000001}    | ${'tremilliamilliatillion'}
+  ${4000001}    | ${'quattuormilliamilliatillion'}
+  ${5000001}    | ${'quinmilliamilliatillion'}
+  ${6000001}    | ${'sexmilliamilliatillion'}
+  ${7000001}    | ${'septenmilliamilliatillion'}
+  ${8000001}    | ${'octomilliamilliatillion'}
+  ${9000001}    | ${'novemmilliamilliatillion'}
+`('should return "$name" for 1000^$thousandPower', ({ name, thousandPower, }) => {
+  expect(getKiloName(thousandPower)).toBe(name)
+})
diff --git a/src/systems/en/getShortKiloName.ts b/src/systems/en/getShortKiloName.ts
new file mode 100644
index 0000000..2fd635e
--- /dev/null
+++ b/src/systems/en/getShortKiloName.ts
@@ -0,0 +1,24 @@
+import { GetKiloName, } from '../../common/NumberSystem'
+import NAMES from './names.json'
+import getKiloCombiningPrefix from './base/kilo/combiningPrefix'
+
+const getKiloName: GetKiloName = thousandPower => {
+  if (thousandPower === 0) {
+    return ''
+  }
+  if (thousandPower === 1) {
+    return NAMES.thousand
+  }
+  const kilo = thousandPower - 1
+  const kiloHundreds = Math.floor(kilo / 100)
+  const kiloTens = Math.floor(kilo / 10 % 10)
+  const kiloOnes = Math.floor(kilo % 10)
+
+  return getKiloCombiningPrefix(
+    kiloHundreds,
+    kiloTens,
+    kiloOnes
+  ) + NAMES.kiloEvenSuffix
+}
+
+export default getKiloName
diff --git a/src/systems/en/names.json b/src/systems/en/names.json
new file mode 100644
index 0000000..fe5fa34
--- /dev/null
+++ b/src/systems/en/names.json
@@ -0,0 +1,92 @@
+{
+  "units": [
+    "zero",
+    "one",
+    "two",
+    "three",
+    "four",
+    "five",
+    "six",
+    "seven",
+    "eight",
+    "nine"
+  ],
+  "tenPlus": [
+    "ten",
+    "eleven",
+    "twelve",
+    "thirteen",
+    "fourteen",
+    "fifteen",
+    "sixteen",
+    "seventeen",
+    "eighteen",
+    "nineteen"
+  ],
+  "tenTimes": [
+    "zero",
+    "ten",
+    "twenty",
+    "thirty",
+    "forty",
+    "fifty",
+    "sixty",
+    "seventy",
+    "eighty",
+    "ninety"
+  ],
+  "hundred": "hundred",
+  "thousand": "thousand",
+  "kiloSpecialUnits": [
+    "",
+    "m",
+    "b",
+    "tr",
+    "quadr",
+    "quin",
+    "sex",
+    "sept",
+    "oct",
+    "non"
+  ],
+  "kiloUnits": [
+    "",
+    "un",
+    "duo",
+    "tre",
+    "quattuor",
+    "quin",
+    "sex",
+    "septen",
+    "octo",
+    "novem"
+  ],
+  "kiloTens": [
+    "",
+    "dec",
+    "vigin",
+    "trigin",
+    "quadragin",
+    "quinquagin",
+    "sexagin",
+    "septuagin",
+    "octogin",
+    "nonagin"
+  ],
+  "kiloHundreds": [
+    "",
+    "cen",
+    "duocen",
+    "trecen",
+    "quadringen",
+    "quingen",
+    "sescen",
+    "septingen",
+    "octingen",
+    "nongen"
+  ],
+  "kiloThousand": "millia",
+  "kiloEvenSuffix": "llion",
+  "kiloOddSuffix": "lliard",
+  "and": "and"
+}
diff --git a/src/systems/en/short/getHundredName.ts b/src/systems/en/short/getHundredName.ts
deleted file mode 100644
index 66725b3..0000000
--- a/src/systems/en/short/getHundredName.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-import NAMES from './names.json'
-
-interface GetHundredName {
-  (tens: number, ones: number): string,
-}
-
-const getHundredName: GetHundredName = (tens, ones) => {
-  switch (tens) {
-    case 0:
-      return NAMES.base.units[ones]
-    case 1:
-      if (ones > 0) {
-        return NAMES.base.tenPlus[ones]
-      }
-      break
-    default:
-      break
-  }
-
-  return (
-    ones > 0
-      ? [
-        NAMES.base.tens[tens],
-        NAMES.base.units[ones],
-      ]
-      .join(' ')
-      : NAMES.base.tens[tens]
-  )
-}
-
-export default getHundredName
diff --git a/src/systems/en/short/getThousandName.test.ts b/src/systems/en/short/getThousandName.test.ts
deleted file mode 100644
index 95b80e3..0000000
--- a/src/systems/en/short/getThousandName.test.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import getThousandName from './getThousandName'
-
-it('should exist', () => {
-  expect(getThousandName).toBeDefined()
-})
-
-it('should be a callable', () => {
-  expect(typeof getThousandName).toBe('function')
-})
-
-it('should accept 3 arguments', () => {
-  expect(getThousandName).toHaveLength(3)
-})
-
-describe.each`
-  hundreds | hundredsName
-  ${1}     | ${'one hundred'}
-  ${2}     | ${'two hundred'}
-  ${3}     | ${'three hundred'}
-  ${4}     | ${'four hundred'}
-  ${5}     | ${'five hundred'}
-  ${6}     | ${'six hundred'}
-  ${7}     | ${'seven hundred'}
-  ${8}     | ${'eight hundred'}
-  ${9}     | ${'nine hundred'}
-`('on $hundreds in hundreds place', ({ hundreds, hundredsName, }) => {
-  it(`should return "${hundredsName}" on ${hundreds}00`, () => {
-    expect(getThousandName(hundreds, 0, 0)).toBe(hundredsName)
-  })
-})
diff --git a/src/systems/en/short/getThousandName.ts b/src/systems/en/short/getThousandName.ts
deleted file mode 100644
index 7b129a0..0000000
--- a/src/systems/en/short/getThousandName.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import getHundredName from './getHundredName'
-import NAMES from './names.json'
-
-interface GetThousandName {
-  (hundreds: number, tens: number, ones: number): string,
-}
-
-const getThousandName: GetThousandName = (hundreds, tens, ones) => {
-  if (hundreds === 0) {
-    return getHundredName(tens, ones)
-  }
-
-  if (tens === 0 && ones === 0) {
-    return [
-      NAMES.base.units[hundreds],
-      NAMES.hundred,
-    ]
-      .join(' ')
-  }
-
-  return [
-    NAMES.base.units[hundreds],
-    NAMES.hundred,
-    getHundredName(tens, ones),
-  ]
-    .join(' ')
-}
-
-export default getThousandName
diff --git a/src/systems/en/short/names.json b/src/systems/en/short/names.json
deleted file mode 100644
index 0026606..0000000
--- a/src/systems/en/short/names.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "base": {
-    "units":      ["zero" , "one"    , "two"    , "three"    , "four"       , "five"       , "six"     , "seven"     , "eight"    , "nine"    ],
-    "tenPlus":    ["ten"  , "eleven" , "twelve" , "thirteen" , "fourteen"   , "fifteen"    , "sixteen" , "seventeen" , "eighteen" , "nineteen"],
-    "tens":       ["zero" , "ten"    , "twenty" , "thirty"   , "forty"      , "fifty"      , "sixty"   , "seventy"   , "eighty"   , "ninety"  ]
-  },
-  "prefix": {
-    "units": {
-      "formal":   [""     , "un"     , "duo"    , "tre"      , "quattuor"   , "quin"       , "sex"     , "septen"    , "octo"     , "novem"   ],
-      "informal": [""     , "un"     , "do"     , "tre"      , "quattuor"   , "quin"       , "sex"     , "septen"    , "octo"     , "novem"   ]
-    },
-    "tens": {
-      "formal":   [""     , "dec"    , "vigin"  , "trigin"   , "quadragin"  , "quinquagin" , "sexagin" , "septuagin" , "octogin"  , "nonagin" ],
-      "informal": [""     , "dec"    , "vigin"  , "trigin"   , "quadragin"  , "quinquagin" , "sexagin" , "septuagin" , "octogin"  , "nonagin" ]
-    },
-    "hundreds": {
-      "formal":   [""     , "cen"    , "duocen" , "trecen"   , "quadringen" , "quingen"    , "sescen"  , "septingen" , "octingen" , "nongen"  ],
-      "informal": [""     , "cen"    , "ducen"  , "trecen"   , "quadringen" , "quingen"    , "sescen"  , "septingen" , "octingen" , "nongen"  ]
-    },
-    "special": {
-      "formal":   [""     , "mi"     , "bi"     , "tri"      , "quadri"     , "quin"       , "sex"     , "sept"      , "oct"      , "non"     ],
-      "informal": [""     , "mi"     , "bi"     , "tri"      , "quadri"     , "quin"       , "sex"     , "sept"      , "oct"      , "non"     ]
-    }
-  },
-  "hundred": "hundred",
-  "thousand": "thousand",
-  "millia": "millia",
-  "suffix": {
-    "llion": "llion",
-    "lliard": "lliard"
-  }
-}
diff --git a/src/systems/tl/names.json b/src/systems/tl/names.json
new file mode 100644
index 0000000..18d74e6
--- /dev/null
+++ b/src/systems/tl/names.json
@@ -0,0 +1,92 @@
+{
+  "units": [
+    "sero",
+    "isa",
+    "dalawa",
+    "tatlo",
+    "apat",
+    "lima",
+    "anim",
+    "pito",
+    "walo",
+    "siyam"
+  ],
+  "tenPlus": [
+    "sampu",
+    "labing-isa",
+    "labindalawa",
+    "labintatlo",
+    "labing-apat",
+    "labinlima",
+    "labing-anim",
+    "labimpito",
+    "labingwalo",
+    "labinsiyam"
+  ],
+  "tenTimes": [
+    "sero",
+    "sampu",
+    "dalawampu",
+    "tatlumpu",
+    "apatnapu",
+    "limampu",
+    "animnapu",
+    "pitumpu",
+    "walumpu",
+    "siyamnapu"
+  ],
+  "hundred": "daan",
+  "thousand": "libo",
+  "kiloSpecialUnits": [
+    "",
+    "mi",
+    "bi",
+    "tri",
+    "kuwadri",
+    "kuwin",
+    "seks",
+    "sept",
+    "okt",
+    "non"
+  ],
+  "kiloUnits": [
+    "",
+    "un",
+    "duo",
+    "tre",
+    "kuwatuwor",
+    "kuwin",
+    "seks",
+    "septen",
+    "okto",
+    "nobem"
+  ],
+  "kiloTens": [
+    "",
+    "des",
+    "bigin",
+    "trigin",
+    "kuwadragin",
+    "kuwinkuwagin",
+    "seksagin",
+    "septuwagin",
+    "oktogin",
+    "nonagin"
+  ],
+  "kiloHundreds": [
+    "",
+    "sen",
+    "duosen",
+    "tresen",
+    "kuwadringen",
+    "kuwingen",
+    "sesen",
+    "septingen",
+    "oktingen",
+    "nongen"
+  ],
+  "kiloThousand": "milya",
+  "kiloEvenSuffix": "lyon",
+  "kiloOddSuffix": "lyard",
+  "and": "at"
+}
diff --git a/src/systems/tl/short/getBaseHundredUnit.test.ts b/src/systems/tl/short/getBaseHundredUnit.test.ts
deleted file mode 100644
index aeb542d..0000000
--- a/src/systems/tl/short/getBaseHundredUnit.test.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-import getBaseHundredUnit from './getBaseHundredUnit'
-
-it('should exist', () => {
-  expect(getBaseHundredUnit).toBeDefined()
-})
-
-it('should be a callable', () => {
-  expect(typeof getBaseHundredUnit).toBe('function')
-})
-
-it('should accept 3 arguments', () => {
-  expect(getBaseHundredUnit).toHaveLength(1)
-})
-
-test.each`
-  hundreds | hundredsName     | hundredsDisplay
-  ${1}     | ${'sandaan'}     | ${100}
-  ${2}     | ${'dalawandaan'} | ${200}
-  ${3}     | ${'tatlongdaan'} | ${300}
-  ${4}     | ${'apatnaraan'}  | ${400}
-  ${5}     | ${'limandaan'}   | ${500}
-  ${6}     | ${'animnaraan'}  | ${600}
-  ${7}     | ${'pitongdaan'}  | ${700}
-  ${8}     | ${'walongdaan'}  | ${800}
-  ${9}     | ${'siyamnaraan'} | ${900}
-`('should return "$hundredsName" on $hundredsDisplay', ({ hundreds, hundredsName, }) => {
-  expect(getBaseHundredUnit(hundreds)).toBe(hundredsName)
-})
diff --git a/src/systems/tl/short/getBaseHundredUnit.ts b/src/systems/tl/short/getBaseHundredUnit.ts
deleted file mode 100644
index 2cd5b95..0000000
--- a/src/systems/tl/short/getBaseHundredUnit.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-import NAMES from './names.json'
-
-interface GetBaseHundredUnit {
-  (hundreds: number): string
-}
-
-const getBaseHundredUnit: GetBaseHundredUnit = hundreds => {
-  let hundredsUnit = NAMES.base.units[hundreds]
-  const hundredsSuffix = NAMES.hundred
-  const unitLastCharacter = hundredsUnit.slice(-1)
-  switch (unitLastCharacter) {
-    case 't':
-    case 'm':
-      return hundredsUnit + 'nar' + hundredsSuffix.slice(1)
-    case 'a':
-      if (hundredsUnit.startsWith('i')) {
-        hundredsUnit = hundredsUnit.slice(1)
-      }
-      return hundredsUnit + 'n' + hundredsSuffix
-    case 'o':
-    default:
-      break
-  }
-
-  return hundredsUnit + 'ng' + hundredsSuffix
-}
-
-export default getBaseHundredUnit
diff --git a/src/systems/tl/short/getBaseTenUnit.ts b/src/systems/tl/short/getBaseTenUnit.ts
deleted file mode 100644
index 2c4b929..0000000
--- a/src/systems/tl/short/getBaseTenUnit.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import NAMES from './names.json'
-
-interface GetBaseTenUnit {
-  (tens: number): string
-}
-
-const getBaseTenUnit: GetBaseTenUnit = (tens) => {
-  let tenUnit = NAMES.base.units[tens]
-  const tenSuffix = NAMES.ten
-  const unitLastCharacter = tenUnit.slice(-1)
-  switch (unitLastCharacter) {
-    case 't':
-    case 'm':
-      return tenUnit + 'na' + tenSuffix
-    case 'o':
-      tenUnit = tenUnit.slice(0, -1) + 'u'
-      break
-    case 'a':
-      if (tenUnit.startsWith('i')) {
-        tenUnit = tenUnit.slice(1)
-      }
-      break
-    default:
-      break
-  }
-
-  return tenUnit + 'm' + tenSuffix
-}
-
-export default getBaseTenUnit
diff --git a/src/systems/tl/short/getHundredName.test.ts b/src/systems/tl/short/getHundredName.test.ts
deleted file mode 100644
index 9fc48fe..0000000
--- a/src/systems/tl/short/getHundredName.test.ts
+++ /dev/null
@@ -1,62 +0,0 @@
-import getHundredName from './getHundredName'
-
-it('should exist', () => {
-  expect(getHundredName).toBeDefined()
-})
-
-it('should be a callable', () => {
-  expect(typeof getHundredName).toBe('function')
-})
-
-it('should accept 2 arguments', () => {
-  expect(getHundredName).toHaveLength(2)
-})
-
-describe('on 0 in tens place', () => {
-  test.each`
-    ones | onesName
-    ${0} | ${'sero'}
-    ${1} | ${'isa'}
-    ${2} | ${'dalawa'}
-    ${3} | ${'tatlo'}
-    ${4} | ${'apat'}
-    ${5} | ${'lima'}
-    ${6} | ${'anim'}
-    ${7} | ${'pito'}
-    ${8} | ${'walo'}
-    ${9} | ${'siyam'}
-  `(`should return "$onesName" for $ones`, ({ ones, onesName, }) => {
-    expect(getHundredName(0, ones)).toBe(onesName)
-  })
-})
-
-describe.each`
-  tens | tensName
-  ${2} | ${'dalawampu'}
-  ${3} | ${'tatlumpu'}
-  ${4} | ${'apatnapu'}
-  ${5} | ${'limampu'}
-  ${6} | ${'animnapu'}
-  ${7} | ${'pitumpu'}
-  ${8} | ${'walumpu'}
-  ${9} | ${'siyamnapu'}
-`('on $tens in tens place', ({ tens, tensName, }) => {
-  test.each`
-    ones | onesName
-    ${0} | ${''}
-    ${1} | ${"'t isa"}
-    ${2} | ${"'t dalawa"}
-    ${3} | ${"'t tatlo"}
-    ${4} | ${"'t apat"}
-    ${5} | ${"'t lima"}
-    ${6} | ${"'t anim"}
-    ${7} | ${"'t pito"}
-    ${8} | ${"'t walo"}
-    ${9} | ${"'t siyam"}
-  `(`should return "${tensName}$onesName" for ${tens}$ones`, ({ ones, onesName, }) => {
-    expect(getHundredName(tens, ones)).toBe([
-      tensName,
-      onesName
-    ].join(''))
-  })
-})
diff --git a/src/systems/tl/short/getHundredName.ts b/src/systems/tl/short/getHundredName.ts
deleted file mode 100644
index 9102d4d..0000000
--- a/src/systems/tl/short/getHundredName.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import NAMES from './names.json'
-import getTenPlusName from './getTenPlusName'
-import getBaseTenUnit from './getBaseTenUnit'
-
-interface GetHundredName {
-  (tens: number, ones: number): string,
-}
-
-const getHundredName: GetHundredName = (tens, ones) => {
-  switch (tens) {
-    case 0:
-      return NAMES.base.units[ones]
-    case 1:
-      if (ones > 0) {
-        return getTenPlusName(ones)
-      }
-      break
-    default:
-      break
-  }
-
-  if (ones > 0) {
-    return [
-      getBaseTenUnit(tens),
-      "'",
-      NAMES.and.slice(1),
-      ' ',
-      NAMES.base.units[ones],
-    ].join('')
-  }
-  return getBaseTenUnit(tens)
-}
-
-export default getHundredName
diff --git a/src/systems/tl/short/getTenPlusName.test.ts b/src/systems/tl/short/getTenPlusName.test.ts
deleted file mode 100644
index caf65ee..0000000
--- a/src/systems/tl/short/getTenPlusName.test.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-import getTenPlusName from './getTenPlusName'
-
-it('should exist', () => {
-  expect(getTenPlusName).toBeDefined()
-})
-
-it('should be a callable', () => {
-  expect(typeof getTenPlusName).toBe('function')
-})
-
-it('should accept 1 argument', () => {
-  expect(getTenPlusName).toHaveLength(1)
-})
-
-describe('on 1 in tens place', () => {
-  test.each`
-    ones | tenPlusName
-    ${0} | ${'sampu'}
-    ${1} | ${'labing-isa'}
-    ${2} | ${'labindalawa'}
-    ${3} | ${'labintatlo'}
-    ${4} | ${'labing-apat'}
-    ${5} | ${'labinlima'}
-    ${6} | ${'labing-anim'}
-    ${7} | ${'labimpito'}
-    ${8} | ${'labingwalo'}
-    ${9} | ${'labinsiyam'}
-  `(`should return "$tenPlusName" for 1$ones`, ({ ones, tenPlusName, }) => {
-    expect(getTenPlusName(ones)).toBe(tenPlusName)
-  })
-})
diff --git a/src/systems/tl/short/getTenPlusName.ts b/src/systems/tl/short/getTenPlusName.ts
deleted file mode 100644
index a5a5d10..0000000
--- a/src/systems/tl/short/getTenPlusName.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import NAMES from './names.json'
-
-interface GetTenPlusName {
-  (ones: number): string,
-}
-
-const getTenPlusName: GetTenPlusName = (ones) => {
-  if (ones === 0) {
-    return NAMES.base.tens[1]
-  }
-
-  const unit = NAMES.base.units[ones]
-  const tenPlusPrefix = NAMES.tenPlus
-  const unitFirstCharacter = unit.charAt(0)
-
-  switch (unitFirstCharacter) {
-    case 'i':
-    case 'a':
-      return tenPlusPrefix + 'ng-' + unit
-    case 'd':
-    case 't':
-    case 'l':
-    case 's':
-      return tenPlusPrefix + 'n' + unit
-    case 'p':
-      return tenPlusPrefix + 'm' + unit
-    default:
-      break
-  }
-
-  return tenPlusPrefix + 'ng' + unit
-}
-
-export default getTenPlusName
diff --git a/src/systems/tl/short/getThousandName.test.ts b/src/systems/tl/short/getThousandName.test.ts
deleted file mode 100644
index 7115f06..0000000
--- a/src/systems/tl/short/getThousandName.test.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import getThousandName from './getThousandName'
-
-it('should exist', () => {
-  expect(getThousandName).toBeDefined()
-})
-
-it('should be a callable', () => {
-  expect(typeof getThousandName).toBe('function')
-})
-
-it('should accept 3 arguments', () => {
-  expect(getThousandName).toHaveLength(3)
-})
-
-describe.each`
-  hundreds | hundredsName
-  ${1}     | ${'sandaan'}
-  ${2}     | ${'dalawandaan'}
-  ${3}     | ${'tatlongdaan'}
-  ${4}     | ${'apatnaraan'}
-  ${5}     | ${'limandaan'}
-  ${6}     | ${'animnaraan'}
-  ${7}     | ${'pitongdaan'}
-  ${8}     | ${'walongdaan'}
-  ${9}     | ${'siyamnaraan'}
-`('on $hundreds in hundreds place', ({ hundreds, hundredsName, }) => {
-  test.each`
-    ones | onesName
-    ${1} | ${'isa'}
-    ${2} | ${'dalawa'}
-    ${3} | ${'tatlo'}
-    ${4} | ${'apat'}
-    ${5} | ${'lima'}
-    ${6} | ${'anim'}
-    ${7} | ${'pito'}
-    ${8} | ${'walo'}
-    ${9} | ${'siyam'}
-  `(`should return "${hundredsName} at $onesName" on ${hundreds}0$ones`, ({ ones, onesName, }) => {
-    expect(getThousandName(hundreds, 0, ones)).toBe(hundredsName + ' at ' + onesName)
-  })
-})
diff --git a/src/systems/tl/short/getThousandName.ts b/src/systems/tl/short/getThousandName.ts
deleted file mode 100644
index 48497fb..0000000
--- a/src/systems/tl/short/getThousandName.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import getHundredName from './getHundredName'
-import NAMES from './names.json'
-import getBaseHundredUnit from './getBaseHundredUnit'
-
-interface GetThousandName {
-  (hundreds: number, tens: number, ones: number): string,
-}
-
-const getThousandName: GetThousandName = (hundreds, tens, ones) => {
-  if (hundreds === 0) {
-    return getHundredName(tens, ones)
-  }
-
-  if (tens === 0 && ones === 0) {
-    return getBaseHundredUnit(hundreds)
-  }
-
-  if (tens === 0) {
-    return [
-      getBaseHundredUnit(hundreds),
-      NAMES.and,
-      NAMES.base.units[ones],
-    ]
-      .join(' ')
-  }
-
-  return [
-    getBaseHundredUnit(hundreds),
-    getHundredName(tens, ones),
-  ]
-    .join(' ')
-}
-
-export default getThousandName
diff --git a/src/systems/tl/short/names.json b/src/systems/tl/short/names.json
deleted file mode 100644
index 01c68a7..0000000
--- a/src/systems/tl/short/names.json
+++ /dev/null
@@ -1,180 +0,0 @@
-{
-  "base": {
-    "units": [
-      "sero",
-      "isa",
-      "dalawa",
-      "tatlo",
-      "apat",
-      "lima",
-      "anim",
-      "pito",
-      "walo",
-      "siyam"
-    ],
-    "tenPlus": [
-      "sampu",
-      "labing-isa",
-      "labindalawa",
-      "labintatlo",
-      "labing-apat",
-      "labinlima",
-      "labing-anim",
-      "labimpito",
-      "labingwalo",
-      "labinsiyam"
-    ],
-    "tens": [
-      "sero",
-      "sampu",
-      "dalawampu",
-      "tatlumpu",
-      "apatnapu",
-      "limampu",
-      "animnapu",
-      "pitumpu",
-      "walumpu",
-      "siyamnapu"
-    ],
-    "hundreds": [
-      "sero",
-      "sandaan",
-      "dalawandaan",
-      "tatlongdaan",
-      "apatnaraan",
-      "limandaan",
-      "animnaraan",
-      "pitongdaan",
-      "walongdaan",
-      "siyamnaraan"
-    ],
-    "thousands": [
-      "sero",
-      "sanlibo",
-      "dalawanlibo",
-      "tatlonglibo",
-      "apatnalibo",
-      "limanlibo",
-      "animnalibo",
-      "pitonglibo",
-      "walonglibo",
-      "siyamnalibo"
-    ]
-  },
-  "prefix": {
-    "units": {
-      "formal": [
-        "",
-        "un",
-        "duo",
-        "tre",
-        "kuwatuwor",
-        "kuwin",
-        "seks",
-        "septen",
-        "okto",
-        "nobem"
-      ],
-      "informal": [
-        "",
-        "un",
-        "do",
-        "tre",
-        "kuwatuwor",
-        "kuwin",
-        "seks",
-        "septen",
-        "okto",
-        "nobem"
-      ]
-    },
-    "tens": {
-      "formal": [
-        "",
-        "des",
-        "bigin",
-        "trigin",
-        "kuwadragin",
-        "kuwinkuwagin",
-        "seksagin",
-        "septuwagin",
-        "oktogin",
-        "nonagin"
-      ],
-      "informal": [
-        "",
-        "des",
-        "bigin",
-        "trigin",
-        "kuwadragin",
-        "kuwinkuwagin",
-        "seksagin",
-        "septuwagin",
-        "oktogin",
-        "nonagin"
-      ]
-    },
-    "hundreds": {
-      "formal": [
-        "",
-        "sen",
-        "duosen",
-        "tresen",
-        "kuwadringen",
-        "kuwingen",
-        "sesen",
-        "septingen",
-        "oktingen",
-        "nongen"
-      ],
-      "informal": [
-        "",
-        "sen",
-        "dusen",
-        "tresen",
-        "kuwadringen",
-        "kuwingen",
-        "sesen",
-        "septingen",
-        "oktingen",
-        "nongen"
-      ]
-    },
-    "special": {
-      "formal": [
-        "",
-        "mi",
-        "bi",
-        "tri",
-        "kuwadri",
-        "kuwin",
-        "seks",
-        "sept",
-        "okt",
-        "non"
-      ],
-      "informal": [
-        "",
-        "mi",
-        "bi",
-        "tri",
-        "kuwadri",
-        "kuwin",
-        "seks",
-        "sept",
-        "okt",
-        "non"
-      ]
-    }
-  },
-  "and": "at",
-  "ten": "pu",
-  "hundred": "daan",
-  "tenPlus": "labi",
-  "thousand": "libo",
-  "millia": "milya",
-  "suffix": {
-    "llion": "lyon",
-    "lliard": "lyard"
-  }
-}