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.
squaws skuas sequoias sukkahs sacs suqs sags skas suks scows sikas soaks sacks sagas sakes skews sakis sucks souks sagos socas saigas scouse segues soukous squeeze sax
squaws hawks yucas dawks skuas macaws quags gawks gewgaws geegaws aquas caws quays quass quasi quais gawsy teguas yugas