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.
parquet paroquet paraquet paraquat parakeet parkette parroket parrakeet precut parked porrect peruked pricket parkade parakite preguide hyperacute perked porked preact hyperacuity precode pricked prigged progged
parquet roquet briquet croquet paraquet paroquet torqued