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.
killick killock klick klik click gallic kolacky gallica cowlick colicky clack clock cluck colic kulak calico coeliac
rollick killick lick woollike soullike seallike hillock bowllike bullock eellike flick phallic veillike mullock click colicky klick owllike pollock cowlick pollack rollicky gallic slick gallica taillike killock shellack