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.
redid readied reded redded reeded reedit readded rated retied routed radded rooted retted rodded ridded ratted raided redout rioted redate rotted rutted radiate radioed readout ridotto rodeoed
redid did deeded seeded reedit dido reded didy teddy teiid edit fetid foetid iodid heeded iodide coedit gadid gadoid mediad needed reeded ceded sueded weeded
redia rediae red uredo oreide cred brede radii radio read readd ready redd rede rued bred redo ired reed credo reedy uredia retie ureide