var building = [ ["Aaron", "Agamemnon"], ["Bob", "Blob"], ["Catherine", "Carrot", "Chris"], ["Dustin", "Drapes"], ["Ekaterina", "Elbow-Bone"], ["Francesca", "Flan", "Flipper", "Fozzy"], ["Gustina"], ["Harriet", "Harmony", "Ham"] ]; var neurosis = []; for (var i=0; i < building.length; i++) { if (i % 2 === 0) { for (var j=0; j < building[i].length; j++) { var reversed = building[i][j].split('').reverse().join(''); var lowerCased = reversed.toLowerCase(); var result = lowerCased[0].toUpperCase() + lowerCased.slice(1); neurosis.push(result); } } } console.log(neurosis);