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.
nubuck niobic
buck kebbuck nubuck roebuck sawbuck rebeck chabuk payback tieback kebbock dieback aback zebeck rebuke buyback back kabuki dibbuk bucko dybbuk bock chabouk beck chibouk
nub knubby nubby nubia snub snubby