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.
hylas las lase lass laws lays leas luaus wyles lasso lassi lease liaise lassie lis les lees lyse lows loss lose loos lazy leys less lies laze lacy lace lues leis
hylas las lase lass laws lays leas wyles yaws yays yeas
hyla bylaw ghyll phyla phylae phyle phyllo hila hoyle hula chyle shyly