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.
daybed dabbed daubed dibbed dubbed tabbed tabued tabbied tabooed tubed debate tubbed
daybed gybed bed dibbed tabbed lobbied bibbed gobbed babied abed bedu gibed bead bobbed jobbed tubed jibbed lubed fibbed knobbed nibbed robbed rubbed sabbed seabed subbed daubed tabued boobed cubed nabbed mobbed fobbed fubbed hobbed hoboed gibbed buboed jabbed jibed lobbed ribbed gabbed lobed robed rubied sabed sobbed dabbed cabbed ebbed dubbed tabbied tubbed webbed