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.
dugong duking ducking tugging dogging digging docking deking diking toking dyking decking dekeing dicking tagging togging tucking
gong legong dugong togging wagging bigging begging cogging conga eggnog fagging figging bogging fogging vegging hogging igging shagging jagging egging logging mogging nagging pegging pugging rigging sagging zagging digging jogging gagging wigging bagging fugging lagging gang dogging bugging cooing legging kegging cuckooing jugging going gigging jigging hugging locoing hagging congo lugging mugging nogging pigging ragging rugging seagoing zigging tagging tugging waygoing chugging shogging