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.
birettas birrettas berettas berrettas burettes burets breads britts berets barrettes barrets birdies barytas borts brats bruts birds brits brads brutes breeds brides boarts bruits broads bredes bardes berates burdies brights byroads borides barites borates barytes burritos brattice bourrides bards bortz burds beards boards braids broods
ariettas berettas berrettas birettas birrettas reatas ariettes barrettes burettes curettes pirouettes proettes syrettes
biretta beret beretta birred birretta buret burette