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.
toit tot tit tote toot titi doit tout titty tittie tet dit tat tut tod dite tidy toad tate dato tied dita duit tody taut tutu tide toed teat ditto tutti teiid toddy deity tatty toady ditty datto tutee dotty tutty today