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.
pennine pennon panini panino pinene pinion pinon
pennine nine nannie venine genuine canine coniine conine guanine quinine leonine munnion rennin tannin hyenine
penni pennia penna pennae penne penny pen