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.
cotan cotton cottony codon coden cutin catena codein gotten catenae codeina codeine
cotan tan shaitan titan dittany stane soutane cetane tain attain biotin botany butane photon phytane gitano litany ratan ratany rattan reattain retain seitan stain detain tetany witan sheitan
cot coat coatee coati coda coot cootie cote coteau cotta cottae couteau acta coact scot scottie