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.
cuckooed cocked cooked quacked cockatoo caked coked kicked kecked cogged quaked cockade cocotte coquet gawked keeked kegged
cuckooed cooed cooeed booked hooked cooked locoed looked rooked