text: function reduce(str){
      let reduced = '';
      let arr = str.split('');
      for (let i = 1, len = str.length; i < len; i++){
          if(arr[i-1] === arr[i]){
              arr[i] = false;
              arr[i-1] = false;
          }
      }
      return arr.filter(x => x).join('');
  }
  
  function super_reduced_string(s){
      let firstPass = reduce(s);
      while(firstPass.length !== reduce(firstPass).length){
          firstPass = reduce(firstPass);
      }
      if(!firstPass.length){
          return 'Empty String';
      }
      return firstPass;
  }
  