cccc cccp cccv ccee ccoc ccpe ccpp cctc cctt cctv ccvo cec- cece ceco cecp cect ceec ceke ceop cepc cepe cepo cepp cept cet- cete ceto cetp cetv cevo ckck ckco ckcv ckoc ckoo ckot ckpc ckvo coce cock coco cocp coct coep cok- coke coko cook coop coot cope copo copp copt cotc cote coto cott cove covo cpce cpep cptp cpvc cpvt ctcp ctec ctep ctot ctpo ctpp ctvo ctvt cvcc cvet cvte eccc ecce ecco ecct ecko eco- ecop ecot ecpp ect- ectc ecto ectv eeee eeke eeoc eetc eete ekco ekek eket ekpe ekpo eotc eoto epcc epec epee epoc epot eppc eppo eppp epte eptv etcc etco etec etee etoe etok ette etto etvo evet evoe evoo evop evvk kccc kcck kcct kccv kcec kcee kceo kcep kcet kckc kckk kcko kckv kcoe kcot kcpc kcpo kcpt kctc kcte kcto kctv kcvk kcvo kcvp kcvv keck keco keek keep keet kekc keke keko keok kep- kepc kepe kept ket- ketc kete ketk keto ketp kett ketv keve kevt kkck kkco kkct kkkk kkoo kkot kkov kkpc kkpk kkpt kktc kktk kktv kkvt kkvv kock kocp koct kokc koke kokk koko kokp kooc kook kooo koop koot koov kope kopp kopt kotc kote kotk koto kott kotv kovc kove kovk kovo kpcc kpcv kpek kpet kpke kpkk kpoc kpoe kpok kpoo kpop kppc kppk kppo kppp kppv kpte kpto kptt kptv kpvc ktcc ktce ktck ktco ktcv ktec ktee ktek ktep ktkc ktke ktkk ktko ktkt ktoc ktoe ktok ktoo ktop ktot ktpk ktpo ktpt kttc kttk ktto kttp kttt kttv ktvc ktve ktvk ktvo ktvt kvcc kvce kvck kvco kvct kvcv kvec kvet kvoc kvoe kvok kvoo kvop kvot kvov kvpt kvtk kvto kvtt kvtv kvvp kvvv o-eo occc occt oce ocee ocet ocke ocpp oct- octe octo oec- oecc oeec oevp oket okko okok okot okpe okpo okto oooo ootp opec opep opet opo- oppo opto otee otep oto- otoe otok otoo otov otpp otte otto ovee ovet ovo- ovoo ovot ovpp pccc pcce pcep pcoe pcpp pcte pctv pece peck peco pect peec peek peep peet peev peke pekk peko pepe pepo pete peto pett poce pock poco poet poke poko pook poop poot pop- popc pope popo popp popt potc pote poto pott povo ppcc pppo pppp pptt pptv ptcc ptop pttc pttk pvco tccc tcep tcov tcpo tctc teck teco tect teec teek teet teev teke teok tepe tepp tete teto tett toce tock toco toee toek toet toke toko took toot top- tope topo topp topt topv totc tote toto tott tove tovo tpck tpcp tpke tppp tpte tptp ttcp tteo ttoe ttop tttt tvtv vecc veck veep veet veke vepe vete veto veve vevo voce voet voke vooc voot vopt vote voto votp vovk vtec vvvv