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.
chis chias chais chaise chiaus chose chaos chase chaws chess chews shies chows chays choose chowse choice cheese cheesy choosy wyches chasse chouse choosey choughs chez shes shaws shays sheas shews shoes shoos shows shahs