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.
burka burke burqa birk burg berk brag bork bark brick brook bourg braky brock barky break broke brake barca berake birkie braggy bricky burgoo barrack brookie berg brig
burka burke burqa eureka quark quirk lurk marka markka murk murky parka turk charka
bur bourree buhr bura bureau burgh burr burro burrow burry bury