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.
grutch crutch grouch grouchy cratch crotch crouch grushie carritch crush gursh curch caroch creche garish qurush caroach caroche carroch currach kerchoo
crutch grutch parritch birrotch rotch rotche rouche ruche ratch wretch retch carritch barouche cratch crotch crouch curch grouchy farouche grouch lurch church