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.
dragged drugged drugget trigged darked dirked tracked drouked traiked troaked derogate direct troked torqued trekked tricked trocked trucked
ragged fragged cragged dragged bragged prigged trigged drugged rerigged progged frigged frugged frogged rugged rigged raggedy shrugged
draggy drag dreggy druggie druggy