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.
boocoos bookoos books bocks buckos bookies bogs bucks biogs bogus bigos bocci becks backs bocce biogas boccie backsaw because buckoes bucksaw
boocoos coos bookoos jockos jocose cocoas cocos cooks cuckoos locoes locos cos