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.
chary charry char chair chare charr cherry cheery charro churr share chiru chore choir chiro cheer chirr shear cheero chirre chorea churro sharia sherry cheerio shariah shri
chary airy deary saury nary quarry marry hoary hoar hear carry harry hare chare chair charry wary share tarry hairy haar kaury teary diary dairy parry leary knarry aery faery awry fairy gharry vary charr char hair weary shear
chai chao chaw chay chia chiao