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.
polkaed plagued plucked placate placket plicate plugged polecat placoid polycot
polkaed flaked chalked talked sulked liked balked baulked bilked bulked laked holked fluked hulked calked caulked milked silked slaked talcked walked yolked