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.
robalos robles roubles rebels rubels rubles rabbles rebills reboils ribless rubbles rubellas rubeolas
robalos bals sabals pibals balsa pueblos lowballs qabalas kabalas bails balas bales balls labials baals blows bolos bubales bubalis bubals cabalas cabals cabbalas kabbalas bawls diabolos