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.
whipped whapped whippet whopped whupped wiped wapped wheeped whooped whipt wipeout
hipped nipped quipped pipped dipped lipped sipped zipped yipped chipped whipped tipped gipped kipped shipped ripped whippet happed lapped popped mapped biped napped wapped tapped lopped supped riped knopped copped siped fopped hopped capped knapped whopped pepped sippet yapped pupped chapped whapped wiped repped mopped zapped kepped gypped gapped rapped wrapped poppied upped dapped sapped tupped cupped dupped piped sopped whupped bopped chopped tippet shopped topped ped