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.
durn diuron durion durian turn darn dourine drone drown drain drawn turion tureen deraign taurine tourney tern torn tarn terne train treen trine trona trone
bourn burn curn mourn durn turn urn churn yourn
dura dure duro durr durra durrie