code: function applyCase(wordA, wordB) {
  	// Exception to avoid words like "I" being converted to "ME"
  	if (wordA.length === 1 && wordB.length !== 1) return wordB;
  	// Uppercase
  	if (wordA === wordA.toUpperCase()) return wordB.toUpperCase();
  	// Lowercase
  	if (wordA === wordA.toLowerCase()) return wordB.toLowerCase();
  	// Capitialized
  	var firstChar = wordA.slice(0, 1);
  	var otherChars = wordA.slice(1);
  	if (firstChar === firstChar.toUpperCase() && otherChars === otherChars.toLowerCase()) {
  		return wordB.slice(0, 1).toUpperCase() + wordB.slice(1).toLowerCase();
  	}
  	// Other cases
  	return wordB;
  }
docs: Take the case from wordA and apply it to wordB