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.
fique fugue fig fug fake feck fico fuck fugu fyke
fique caique pique quey aquae gigue roque toque tuque cheque