text: function rageQuit(input = []) {
  
      let str = "";
      let globalPattern = /[\D]+([0-9]+)/g;
      input = input.shift().match(globalPattern);
  
      if (input !== null) {
          let pattern = /([\D]+)([0-9]+)/;
          for (let i = 0; i < input.length; i++) {
              let result = input[i].match(pattern);
              let sub = result[1].toUpperCase();
              let count = result[2];
              str += sub.repeat(count);
          }
          let reduced = Array.from(new Set(str));
          console.log(`Unique symbols used: ${reduced.length}`);
          console.log(str);
      }
  }
  rageQuit(['a3']);