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.
quasi quassia quays quass quais queasy quiz queys queues queazy cassia gussie gawsie kas gas qis caws case kays gaes cues cuss cays koas guys kaes kaas gays casa kues keas goas
quasi asci bassi quais quass quays lassi luaus
qua quai quay aqua aquae quack quacky quag quagga quaggy quake quaky squaw