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.
duit dit doit duet duty dite daut dita diet deity ditto ditty dought duddie dautie did tut dud dot tit doughty data date deet titi doat doty dawt dido toit didy dote duad tout tutu dato taut dude died titty tutee datto duddy dotty diode didie tutty tutti