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.
flecks flacks flicks flocks flics flocs folks flakes flukes folksy folkies flex flags flogs flocci
flecks alecs flocks clacks leeks leks belleeks locks lucks licks plucks pollocks rollicks mullocks slacks killocks slicks gleeks shellacks clucks shylocks clicks leaks blacks pollacks flicks hillocks elks bullocks flacks blocks bleaks bollocks placks relocks lacks klicks rowlocks killicks sleeks cowlicks whelks clocks shlocks cleeks yelks
fleck flecky flack flic flick floc flock flocky