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.
deign den din dean dene deni deny dino diene dinghy duenna tin dan ten dun don dawn dine dona done down dune dyne tain teen tiny
reign feign deign vein veiny coign meiny pein rein seine sign zein