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.
burn bourn burin buran burnie bourne bren brin barn bran born barny brawn boron baron bruin borne brain bairn briny brine brown barony brainy briony barren browny branny brawny boreen borane barney byrnie baronne biriani brownie
bourn burn curn mourn durn turn urn churn yourn
bur bura bureau burgh burr burro burrow burry bury