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.
rebel rubel rebill reboil rubella rubeola robalo rubbly
rebel jebel bel bell abele babel feeble feebly cowbell label libel obeli pueblo rubel chaebol
reb rebbe rebuy robe rube freebee freebie grebe prebuy