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.
wracked racked wricked wrecked wreaked raked recked racket rucked ricked rocked rackety ryked rooked ragged rocket reeked raggedy rickety hyracoid react recode rigged rogued rugate rugged
backed hacked yacked racked packed whacked jacked tacked sacked knacked quacked lacked shacked wracked coked pecked wrecked rucked caked paiked hocked ducked nicked knocked raked becked mocked decked ricked jacket jauked checked yocked naked lucked shocked quaked chucked ticked licked waked docked bucked wricked laked faked dicked chocked soaked packet socked beaked rocked peaked leaked picked kecked nocked tacket hoicked gecked sicked tucked fucked hawked racket shucked kicked wreaked wicked pocked recked gawked locked baked sucked cocked necked mucked wauked yakked yucked
wrack rack wreak wreck wrick crack cracky track