mappings

    exports.subTen = {
      "0": "",
      "1": "one",
      "2": "two",
      "3": "three",
      "4": "four",
      "5": "five",
      "6": "six",
      "7": "seven",
      "8": "eight",
      "9": "nine",
    }

    exports.subTwenty = {
      "10": "ten",
      "11": "eleven",
      "12": "twelve",
      "13": "thirteen",
      "14": "fourteen",
      "15": "fifteen",
      "16": "sixteen",
      "17": "seventeen",
      "18": "eighteen",
      "19": "nineteen"
    }

    exports.tens = {
      "0": "",
      "2": "twenty",
      "3": "thirty",
      "4": "fourty",
      "5": "fifty",
      "6": "sixty",
      "7": "seventy",
      "8": "eighty",
      "9": "ninety"
    }

    exports.suffix = [
      "",
      "thousand",
      "million",
      "billion",
      "trillion",
      "quadrillion"
    ];