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.
sylvas silvas selvas salvias salivas solves slaves sylphs selves sulfas salves salvos sleaves sleeves sulphas salvoes slieves selfs sluffs slaveys sleighs sloughs salifies selloffs
vulvas ulvas selvas sylvas volvas silvas halvas luvs salivas halves elves delves salvias sulfas clivias halavahs valves wolves pelvis pelves lavas halvahs solves alfas calves salves salvos pilafs helves selves bolivias lavs shelves
sylvae sylva salve salvia salvo selva silva silvae slave slavey solve sylph sylphy