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.
vermian vermin fermion ferryman firman fireman foreman freeman ferrymen foramina pheromone firemen foremen freemen
vermian permian chairman termini doorman preman merman firman pearmain quarryman carman germina german harmine harmin vermin foreman fireman carmine reman fermion ermine bromin barman airman roman germane juryman ferryman dairyman dormin wireman choreman