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.
leys les looeys less lies lays lyse leas lues lees leis lezzy lieus wyles lacey loess lease lyssa looies lessee louies lis las lez loos lazy lose loss lass lice lacy laws lows laze lase lace luce louse lycea hylas lousy lossy lasso loose lowse lycee lassi louis luaus
beys hooeys joeys cooeys keys queys leys looeys deys wheys es