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.
leis les lis leys leas lues lees lies less lease wyles louis loess lieus louies looies lessee liaise looeys lezzie lez las laws lace lase loos loss lows lass lose lice lays lyse luce laze loci lasso lyssa lezzy lycea lossy luaus lowse loose louse lacey lycee lousy hylas lassi