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.
racked wracked raked rocked ricked recked racket rucked wreaked wricked rackety wrecked ryked rocket reeked rooked ragged raggedy rickety hyracoid react recode rigged rogued rugate rugged
backed nocked racked chocked shocked ricked kicked kecked knacked gecked packed rucked quacked becked sucked shacked lucked chucked recked tacked wicked mucked nicked sicked hoicked cocked checked bucked yacked locked yucked hocked yocked decked lacked docked wrecked rocked necked ticked licked knocked picked jacked sacked fucked ducked hacked wracked mocked socked pecked wricked dicked shucked pocked whacked tucked hiked laked racket rooked choked wicket paiked faked juked cheeked soaked becket diked socket keeked tacket howked ticket raked miked gawked hooked biked poked yakked eked cooked duked quaked dyked rocket beaked coed docket caked lekked jacket piked naked peeked locoed booked hawked geeked puked wauked pocket nuked hoked skied picket joked cued ryked wreaked baked waked reeked leaked deked peaked jauked looked packet coked bucket yoked yeuked liked tucket jouked locket skeed toked yukked
rack rake drake cracky rakee raki raku reck rick rickey rock rocky ruck wrack arak brake braky crack crake track