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.
shusher chichier
busher lusher pusher usher shusher musher gusher rusher basher sheer quasher wisher gasher gushier fishery shoer cushier bushier shier posher pushier ashier lasher fishier gaucher shear voucher kasher washer nosher masher pisher josher cashier cosher coucher meshier kosher dasher tushery dishier mishear fisher mushier rasher rushier dashier toucher mosher washier