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.
leak leaky lek leke leku leek laky lack lake lakh league lag leg lac laic lick like loca lock look luck leggy lucky
beak leak peak wreak teak weak