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.
bulbil bulbel bulbul bluebill blowball blueball bluebell bailable bilabial billable boilable
bulbil labial labile bilabial bluebill bulbel bulbul flabbily playbill
bulb balboa bilbo bilboa bilby blab blabby bleb blebby blob blub bullyboy