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.
clocked clacked clicked cloaked clucked calked clogged cleeked caulked colocate collocate collogued calqued clagged cliqued gleeked calycate collect glaiket glugged
blocked locked shylocked relocked flocked hillocked clocked flecked looked relooked lacked slacked licked talcked clacked flicked plucked clucked blacked clicked lucked locket holked rollicked flacked slicked cloaked shellacked locoed yolked
clock clack click cloaca cloacae cloak cluck cocklike