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