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.
titi tit tittie toit teiid titty tat tut tet dit tot taut dita tout tate tide teat duit doit dite tied tutu tidy tote toot datto deity ditto ditty dotty tatty tutee tutti tutty didie