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.
ditas dits ditsy duits diets dites doits dittos tats tads ditz ditties tits deities dots dads tauts dotes didos tates ditzy dates datos duads deads teats dados doats dawts toits dauts titis duets deets dadas todays todies tidies didies dattos dadoes didoes duties tatsoi diodes titties dowdies doodies tattoos dawties tatties toddies toadies daddies tedious duteous teddies dauties deutzia tatouays duds teds tets tods tots tuts
litas raitas ditas pitas its tas bitts katas pittas codeias kits aits getas bites fetas mitts lyttas bitsy hits taus gites zetas kites bettas baits lotahs stoas riots mitis naiads dits shits chetahs wits whits waits toits titis tads doits medias mites writes biotas zits cottas iotas suits tass rites mutase reatas situs writs gits nites botas sits boites jotas satays teas suttas knits betas quiets gaits fits quits sites riatas coitus lits taws fiats pietas bits nits taos suites cites rotas redias quoits etas stays quotas lotas zitis pits dites diets ditsy duits tats tits utas whites wites cheetahs chits shittahs
dita dit data deity diet dite ditto ditty doit duit adit edit dieted dittoed doited