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.
clown clon clone colon colone coloni colony cullion clan cline colin gluon clean callan gallon cauline colleen galleon galloon glen kiln
lown flown blown clown mullion solon galloon reloan violone pelon hellion melon aloin felon galleon saloon chalone talion colony colone clon loin balloon blawn alone billon billion belon pleon lawn loan clone pillion solion million pylon gallon nylon phylon gluon loon halon cullion talon salon zillion coloni colon ballon lion jillion bullion lone felony eloin bouillon shalloon
calo claw clew cloy cowl glow scowl