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.
pricket pricked parakeet parkette parroket parrakeet precut perked preact porked parked parquet prigged peruked precode porrect parkade parakite paraquet paroquet preguide hyperacute hyperacuity percoid progged
pricket cricket racket rackety ricked rickety rocket wricked bracket bricked brocket cricked crocket lorikeet pricked tricked