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.
grey grue gree grew gore gray gory gurry gor cry gar cure crew care guru core grow guar goer cory kore gaur carry cowry curie curry guiro kaury kerry kyrie quare query quire
grey murrey prey surrey trey re