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.
crewed crowed
rewed crewed shrewed brewed furrowed borrowed trowed deerweed narrowed rewet rowed arrowed burweed browed tarweed harrowed crowed marrowed farrowed sorrowed fireweed burrowed