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.
lysin lysine lessen lesson leucin loosen leucine liaison
lysin sin eosin essoin fission fusain hessian casein eosine casini cassino cassina mission passion raisiny resign resiny rosiny cession scission session hyson cosine basin assign sine sign sain casino cassine cosign sinh cousin quassin cuisine lysine ossein raisin reassign resin rosin rusine sasin seisin design