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.
lease leas lase las les liaise lassie lessee lies lose leys leis lays laws less lass lees lues lyse loess loose lowse lassi lycea louse hylas lieus lycee wyles luaus lasso looies louies lezzie looeys lez lis lace lazy lows loss loos lice laze lacy luce
fease cease pease ease lease tease jesse raise vase pase masse asea fesse pause base feaze zoeae reuse phase lase beaus seise tasse resee queasy resew rase yeahs hawse toeas passe paseo paise peise peace leas keas cause easy peas teas chase cheese geese liaise wrasse seas zoeas tawse case chaise chasse sheas yeas
lea flea ilea leal leally olea plea