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.
wheeped whapped whipped whooped whopped whupped wiped wapped whippet wept whipt wipeout
beeped jeeped peeped seeped wheeped cheeped heaped kepped leaped kneepad pepped reaped repped ped
wheep weep weepie weepy sweep sweepy