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.
sharked charked shirked shrieked chirked shrugged charquid
barked sharked charked harked warked narked larked parked marked darked carked peruked quirked creaked burked beraked wracked arcked market troked cracked corked ryked lurked chirked worked shirked traiked tracked borked troaked perked porked dirked wreaked barracked irked reracked raked freaked croaked racked jerked braked forked phreaked yerked
shark chark charka shirk shrike