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.
flecked flacked flicked flocked flaked fluked flagged flogged falcate flokati
flecked lacked shellacked slicked slacked relocked gleeked clocked leaked lekked licked locked lucked blacked blocked flacked flicked flocked hillocked clacked cleeked clicked clucked plucked rollicked sleeked talcked shylocked
fleck flecky flack flick flock flocky