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.
beachy beach beechy bach batch beech bitchy botchy beauish bash bitch boche botch bushy butch bashaw bouchee
achy poachy beachy leachy peachy peach ache nacho catchy patch beechy latch macho batch match catch laich pitchy fitchy each coach chay ratch reechy sauch dashy tach teach tetchy washy witchy vichy pacha cache gouache poach bach ashy mashy mache loach quaich mach bitchy botchy itchy hatch natch leach beach patchy pouchy reach roach dacha duchy tache techy touchy watch yechy