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.
pit pita pity piety pitta pieta pet put pat pot padi ptui paid putt poet peat pout pied pate paty putto putti potto petti peaty petto petty patty potty pouty podia putty pattee pattie ptooey puttee puttie