I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
radii radio rad roadie read raid road redia readd raita ready rediae roadeo rat rid red rod rate rued rudd roti rota rood rode rude riot rite ride reed redo rede redd rato writ
radii cadi gaddi gadi kadi qadi medii padi radio roadie sadi wadi