text: function vowelsSum (arguments) {
      let word = arguments[0];
  
      let sum = 0;
  
      for (let i = 0; i < word.length; i++) {
          let letter = word[i];
  
          switch(letter) {
              case "a": sum += 1; break;
              case "e": sum += 2; break;
              case "i": sum += 3; break;
              case "o": sum += 4; break;
              case "u": sum += 5; break;
              default: break;
          }
      }
  
      console.log(sum);
  }
  
  vowelsSum(["hello"]);
  vowelsSum(["hi"]);
  vowelsSum(["bamboo"]);
  vowelsSum(["beer"]);
  vowelsSum(["yabadabadoo"]);
  