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.
lappet lapped leapt leaped lipped lopped lept loped lipide looped louped
lappet moppet sippet whippet poppet tappet puppet tippet pet tapped tupped napped zapped zipped dupped quipped pipped cupped poet topped pipet supped whipped fopped pepped kepped repeat ripped wrapped sipped dapped tipped happed whapped whupped chipped shipped capped yapped gypped peat repped lopped mopped pupped gapped lipped knopped rapped knapped bopped hopped hipped sopped upped dipped lapped kipped gipped nepeta sapped roupet popped nipped copped tapeta wapped whopped chapped chopped shopped mapped yipped
lap leap lippy loppy flap flappy clap slap