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.
dong donga doing dung tong ding dang tonga dingo dengue toeing dieing donkey tongue dank dink dunk tang ting tung dinky tanga tango tonic
bong hong gong long pong wrong song dong tong
don dona done donee donna donne donnee