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.
puck pucka pack puke peck pock pick pocky pukka pecky picky pac pic pec pug peke peek peak pica poco paik pike pika poky paca piki poke pawky peaky pekoe pique pokey puggy
buck fuck huck guck luck muck puck ruck suck duck tuck chuck shuck yuck