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.
koumysses koumyses koumisses kumyses koumises kumisses camasses gummoses camases camises gummosis
koumysses masses messes misses mosses musses amasses biomasses camasses koumisses koumyses kumisses kumyses
koumys koumyss kumys koumis koumiss