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.
rucks ruckus racks rocks recks ricks wricks wracks wrecks recs rocs raucous rickeys rugs rakes rooks rakis rakus rykes reeks rekeys recuse rakees rogues rugosa roques rugose rugous wreaks rookies rags regs rigs roux
bucks chucks gucks rucks pucks hucks sucks mucks yucks shucks lucks fucks ducks tucks recks ricks gecks rocks wricks buckos hocks fucus wracks kicks kecks souks cocks knocks jocks nicks jacks knacks necks docks chocks becks ukes micks yoicks yeuks pukes bocks shicksa shackos checks whacks wauks wackos quicks jauks dukes socks ruckus ticks zouks auks licks jukus lacks sicks hoicks dicks wackes sickos hacks racks hicks jukes pecks decks backs macks mocks jucos jockos cukes jouks quacks fecks sacks mucus shocks hecks locks suks caucus wrecks picks pocks neuks nukes packs tacks yucas wacks whackos wicks chicks nocks geckos shacks yacks yocks yuks
ruck rack reck rick rickey rock rocky cruck truck