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.
pity piety pit pita paty peaty potty patty putty petty pouty pitta pieta ptooey pot put pat pet pout putt ptui paid pate pied padi peat poet paddy petti petto podia potto putti putto
laity mity pity city deity whity it