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.
lasso lass lassi las lassie leas lays loss laws lase less lease lossy lyssa hylas loess luaus liaise lessee les lis lies lyse lace laze lazy leys loci loos lacy lows leis lues lose lees
lasso basso ass kousso tasse mass sassy lassi wrasse lass pass quass mosso kusso masse gassy gauss cusso gesso bassy bassi bass massa massy paseo passe sass tass chasse