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.
works warks
forks corks works borks dorks porks mirks brooks araks darks perks marks lurks berks charks kirks narks rooks birks crocks harks groks parkas merks drouks torcs troaks trokes warks charkas chirks shirks burkes sharks jerks orcs barks quirks arks rocks brocks markas quarks sarks croaks dirks irokos crooks irks frocks murks burkas parks dreks taroks treks trocks turks carks zerks karaokes larks yerks