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.
locoing locking looking lacking licking logging lucking liking legong laking laconic lagging leaking legging lekking lugging leaguing
locoing docking chucking decking knacking hacking hoicking locking looking conga pocking pecking racking fucking cuckooing joking rooking ricking coking hooking nocking wicking yoking shocking chocking seagoing gecking socking hocking yacking wracking kicking hoking tacking mocking toking necking waygoing wricking lacking licking packing sacking rocking rucking cocking kecking booking recking picking congo ducking lucking bucking going becking knocking dicking shacking cooking poking cooing wrecking whacking nicking tucking mucking ticking cuing quacking yocking checking backing sucking jacking sicking choking shucking yucking