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.
piped pipped pipet peeped pepped pooped popped pupped pipette poppied pipit poppet pupate puppet paupiette
piped siped biped wiped riped ped peeped knopped heaped hipped pupped bopped copied happed aped copped peed knapped gapped napped roped dupped kipped speed pipet sapped spaed loped caped pepped popped quipped soaped tupped yawped yapped shipped chopped cheeped leaped zapped whopped whipped whapped upped toped gawped doped tapped pooped hoped dapped repped spued oped cupped sopped capped wrapped seeped whupped lapped cooped ripped looped hooped coped couped lipped duped mopped pied poppied hypoed louped gaped nipped hopped kepped beeped fopped gypped reaped taped hyped rapped moped bipod sipped pipped whooped gipped sped lipid supped spied raped zipped lopped jeeped jauped mapped japed topped tipped rouped typed wapped dipped wheeped souped chapped chipped shaped shopped yauped yipped