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.
pays pas pass pase pias paws peas pacy passe paise pacey paseo pease paisa pause passee pes pus pis psi pehs pose posy pies puss pees hyps pews piso piss pois peso pows poos pace pious poesy hypos psoai posse peise peace pizza poohs hypes psoae poise pussy
ays bays shays ways says rays pays nays mays lays quays kays gays cays jays hays fays days chays yays as