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.
collies colies coolies cullies coles coalless cullis coulis coleus cols kellies goalies gallies callees coulees gullies killies coals clews cools cowls calls colessee goalless coalesce clues coils coulisse colas culls coalas callas quolls caules calesa caulis callus colossi cullays callous galleys gulleys callose keelless galleass galliass quillais colza clays kales glues galls gules cloze kills cauls gaols class cloys koels kohls quillaias gales gulls gleys close kolas calos kolos glias claws glees goals quills koalas galeas classy gallus clause quells kayles guiles gallous gallows glassie keyless queleas
ballies challies billies dallies sallies collies fellies tellies dollies fillies gullies willies bellies nellies hollies sullies mollies killies gillies allies chillies wallies cullies dillies wellies dellies bullies rallies woollies kellies ghillies gallies lollies tallies jellies jollies sillies follies lies dalles challis volleys halloes goalies lieus tailless doilies muhlies soilless relies tulles wheelies belies colies belles rouilles callees plies molies malleus bailies galleys coalless dailies helloes toolless failles allees sailless mealies goalless polies mulleys heelless doylies chilies holies alleys milles ghoulies pulleys hulloes follis tuilles bialies coolies hilloes mallees soulless tallis felloes mealless cullis tailles rilles keelless valleys lilies milieus mailless walies flies pollees doolies gulleys filles quillais folles holloes selles boulles woolies wheelless chillis les lis
collie colly coolie coolly col