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.
crouched crotched crutched grouched crochet crushed crotchet grutched crotchety crashed creeshed cruciate
crouched grouched ruched tracheid searched perched marched grutched crotched brushed broached breeched breached arched crushed wretched crutched birched rushed lurched roached parched retched preached reechoed torched reached churched
crouch caroch caroche crotch crutch grouch grouchy