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