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.
crotchet crotchety crochet crotched crouched crutched grouched grutched crashed crushed creeshed cruciate
ratchet crotchet rachet recheat retched rochet wretched brachet crochet crotched crotchety crutched grutched
crotch caroch caroche cratch crouch crutch