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.
lays las lass lacy lase lyse laws lazy leys leas hylas lasso lacey luaus lyssa lease lassi lassie looeys liaise les lis lose lies loss lace leis loos laze lees lows less lues lowse lossy loose lycee lycea louis lousy louse loess lieus lezzy wyles
ays bays shays ways says rays pays nays mays lays quays kays gays cays jays hays fays days chays yays as