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.
brachial biracial brashly bearishly boorishly
rachial brachial parochial racial archil biracial crucial grouchily orchil preachily prechill tracheal trochal trochil trochili
brach brachia birch brash brashy breach broach broche abrachia