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.
breach brach breech broach brachia birch brash brashy broche brooch bearish brioche barouche birrotch brush brushy boarish boorish
reach breach preach parch search mariachi arch larch creche caroach huaracho huarache earache broach breech brach retch wretch reechy reecho ratch cratch currach march merch orache perch roach orach preachy dreich
bra bare bear bora bore brae braw bray bree brew brie bura bureau byre rebar