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.
douma doum duma dom dome doom dumb dumbo duomo doomy dummy duomi tom dim dam dame deem deme demo demy dime tomb tome toom
louma douma doum summa soma rumba puma pneuma momma noma luma gumma comma comae coma caeoma duma