function arabicToRoman(number){
    let roman = "";
    const romanNumList = {M:1000,CM:900, D:500,CD:400, C:100, XC:90,L:50, XV: 40, X:10, IX:9, V:5, IV:4, I:1};
    let a;
    if(number < 1 || number > 3999)
      return "Enter a number between 1 and 3999";
    else{
      for(let key in romanNumList){
          a = Math.floor(number / romanNumList[key]);
          if(a >= 0){
              for(let i = 0; i < a; i++){
                roman += key;
              }
            }
          number = number % romanNumList[key];
      }
    }

    return roman;
  }


for (let i = 0; i < 1000; i++) {
    let romanNum = arabicToRoman(i);
    Number.prototype[romanNum] = [];
    for (let j = 0; j < i; j++) {
        Number.prototype[romanNum].push(j);
    }
}

console.log(0..V);


console.log(1..VII);