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