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.
check chick cheek chuck chock chucky cheeky chic chickee shock sheik shack chook choke choky chico chica shuck chegoe cheque chigoe chokey chukka shacko sheikh chug
heck check shock shack chock cheek deck wreck reck pecky peck neck gecko keck geck huck hock hick hack feck whack beck chick chuck sheik shuck
chew chewy ache eche heuch chichi