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.
kolacky colicky clack klick kulak kulaki cowlick killick coeliac killock klik click clock cluck colic cloaca cloacae
kolacky laky lack shellack slack pollack plack bullocky colicky hillocky flocky flecky flaky flakey flack clack blocky black alack lucky leaky lackey mullocky plucky rollicky talcky shlocky lac