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.
birrs biers biros birse burrs burros barres bros burrows bras barrows borrows barrios bars bris berries burs bourrees byres brees brows braes boras brios brays brosy bears brews buhrs brass brose bares bores boors boars braws beers buras briss bries bursa burse broos bourse buries bursae braise boreas brughs brassy bruise burghs browse hybris bewrays bureaus
birrs chirrs yirrs whirrs shirrs mbiras tiros mirs gharris liras quires errs fiars coirs shiers firs guiros fairs chiros burrs heirs viers murrs murras derris churrs wairs giros liars birse parrs charros wires gnarrs carrs durras orris fires mairs virus choirs nairus tiers ires sires kiers sirs burros purrs zaires moires cires arris murres liers barres surras mires tarres lairs arras terras morris sierras cirrus morros keirs airs myrrhs pairs vires hairs sirras nairas biros deairs piers biers noirs kirs tires hires iris whirs dorrs currs vairs charrs chirres durrs chirus weirs churros sherris chairs shires torrs
birr brr barre barrio barrow berry bier biro borrow brrr burr burro burrow burry