TypeError: questionsAndAnswers[i] is undefined

           function print(message) {
  document.write(message);
}

function list(x) {
  var listed = x.join(" - ");
  return listed;
}
var correctAnswers = 0;

var questionsAndAnswers = [
  ["What is after 2?", "3"],
  ["Capital of Ireland?", "dublin"],
  ["Write 3 in word form", "three"]
];


for(var i = 0; i <= 3; i++)
{

  var rightAnswer = questionsAndAnswers[i][1];
  var userAnswer = prompt(questionsAndAnswers[i][0]);
  questionsAndAnswers[i].push(userAnswer);
  if(rightAnswer == userAnswer)
  {
    questionsAndAnswers[i].push("Correct");
    correctAnswers++;
  }
  else
  {
   questionsAndAnswers[i].push("Wrong"); 
  }
}


for( var i = 0; i <= 3; i++)
{
var stats = list(questionsAndAnswers[i]);
print(stats);
}
print(correctAnswers);
            ```