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.
pucka puck pukka pack pika puke pick pica paca peck pock pocky picky pecky pec pic pug pac peak peek peke pike piki poco poke poky peag paik
pucka luck yuck shuck chucky tuck duck suck ruck pukka puck mucky muck lucky quick buck quack guck huck fuck bucko sucky ducky chuck chukka yuca yucky