function solve(input) {

  let conMess = input.shift();


  while (input[0] !== 'Reveal') {

    let cur = input.shift().split(':|:');

    let command = cur[0];

    let subsOrIndex = cur[1];

    let replacement = cur[2];

    let before = '';

    let after = '';


    if (command === 'InsertSpace') {

      before = conMess.substring(0, subsOrIndex);

      after = conMess.substring(subsOrIndex);

      before += ' ';

      conMess = before.concat(after);

      console.log(conMess);

    } else if (command === 'Reverse') {

      if (conMess.includes(subsOrIndex)) {

        conMess = conMess.replace(subsOrIndex, '');

        subsOrIndex = subsOrIndex.split('').reverse().join('');

        conMess += subsOrIndex;

        console.log(conMess);

      } else {

        console.log('error');

      }

    } else if (command === 'ChangeAll') {

      let regEx = RegExp(subsOrIndex, 'g');

      // console.log(regEx);

      conMess = conMess.replace(regEx, replacement);

      console.log(conMess);

    }


  }



  console.log(`You have a new text message: ${conMess}`);

}