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.
rocket racket rocked rackety rickety rooked ricked rucked recked roquet racked wricked wracked wrecked roquette react recti ryked recta raked recut recoat rogued ragout recode reeked regatta requite ricotta wreaked
bucket packet pocket ticket docket becket rocket picket locket wicket tacket racket jacket tucket socket kecked wicked dicked mucked hacked cocked gecked pecked rocked racked docked keto ducked nicked checked bucked wricked keet rackety jacked tucked sucked decked mocked shacked pocked shucked backed yocked skeet chucked recked knacked wracked knocked lucked picked hocked kicked fucked lacked hoicked ricked necked rickety packed ticked chocked rucked wrecked sicked socked licked becked locked nocked quacked sacked shocked whacked yacked tacked yucked
rock rocky roc trock crock rack reck rick rickey rook rookie rooky broke frock iroko croc ruck grok brock troke