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.
picul pical pickle peculia packly pokily pawkily pockily
picul locule chicle cull bacula facula fecula laical caul macula loculi macule nicol oculi pical scull tical chicly
pic pica pick picky pique epic spic spica spicae spick