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.
tutu tut tout taut tutee tutti tutty tit tet tat tot toit daut teat titi toot duty tate tote datto ditto ditty dotty tatty titty