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.
birr brr bier burr biro brrr barre burry berry burro barrio borrow burrow barrow bro bur bra bar bourree bury braw brio bray buhr bura brae broo bare brew bora brow bree bear boar bore beer brie boor byre beery brugh burgh