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.
peck pecky pec peke pick puck peek pack peak pock peaky pucka pekoe picky pocky pac pic peg paca peag pika pike paik poco poke poky pica piki puke pawky pique pokey pukka
beck feck heck geck keck neck peck reck wreck deck check