let input = 'turpentine and turtles'; const vowels = ['a','e','i','o','u']; let resultArray =[ ]; for (let i = 0; i < input.length; i++){ if(input[i] === "e"){ resultArray.push(input[i]); } if(input[i] === "u"){ resultArray.push(input[i]); } for(let j = 0; j < vowels.length; j++){ if (input[i] === vowels[j]){ resultArray.push(input[i]); } } }; //console.log(resultArray); const resultString = resultArray.join('').toUpperCase(); console.log(resultString);