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.
dude dud duddie duet duad diode didie duddy dautie dad did dada dite duit died date deed dote diet dodo dead daut dado deet dido didy duty tide daddy deedy deity doody dowdy teddy toddy tutee
coude gude lude nude rude dude de