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.
perillas perils prills perilous pearls pyrolas parlays payrolls peerless purls parols prowls parlous parrals parrels prelacy pyrrols parles proles
gorillas perillas guerrillas barillas zorillas guerillas hydrillas brillos trills rouilles rilles brills zorillos brailles prills corollas frills grilles krills zorilles variolas drills rills terrellas grills shrills
peril perilla pearl pearly prill puerile