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.
shopping chopping shipping shaping chapping chipping cheeping
fopping hipping sopping supping popping rapping kipping mopping hopping kepping gapping yapping bopping sapping tupping cupping sipping whapping dipping whipping whupping gypping ripping dupping chapping mapping lipping happing zapping pupping lapping tapping topping wrapping pipping zipping napping wapping gipping chipping shopping dapping yipping knapping lopping copping shipping pepping nipping capping tipping quipping upping whopping repping chopping ping doping leaping whooping moping japing spuing soaping taping seeping jauping keeping siping typing oping piing hypoing hyping cooping gawping peeping hooping weeping yawping cheeping wheeping toping beeping aping heaping hoping reaping piping couping coping pooping roping pingo raping duping souping looping wiping loping shaping riping louping yauping jeeping gaping rouping