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.
sheltas shelties shields chelates shallots chields cheloids chalutz sialids
deltas sheltas delts valutas welts galletas relets balatas belts felts flotas helots celts litas gelts kelts maltase melts muletas pelotas pelts lotas
shelta sheltie shelty shalt shelled shield