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.
bewrapped bewrapt burped
rapped frapped trapped wrapped rewrapped crapped bewrapped raped prepped reaped dropped gripped draped ripped repped cropped propped dripped craped tripped