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.
coulisse coulis colessee caulis cullis colies collies cols colossi coolies cullies coulees coalesce coalless culls coils cools cowls close cauls class coals colas coles clause classy coalas caules coleus glossae callose glassie cullays gullies goalies callous guls goalless galliass quillais quillaias clews kolas clues glias claws koels calos clays goals glass gaols cloze calls cloys kolos gloss gulls kohls colza gules guiles quills callas glassy koalas calesa glossy callus quells quails glossa quolls
coulisse pelisse plisse bliss foliose valise galliass malaise paillasse palliasse realise lis
collie coolie coulee coquille oculi col