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.
sadi sad sade said sati stoai sayyid sit sat sod site sudd sate stay cedi side seta seat soda sidh staw sued seed suit stoa satay saute seedy setae soddy stoae suede suite sutta
cadi gadi kadi qadi padi sadi wadi ad