cccc cccp cccv ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt cctv ccvo cec- cece ceco cecp cect ceec ceke ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp cetv cevo ckck ckco ckcv cker ckoc ckoo ckor ckot ckpc ckpr ckrc ckvo coce cock coco cocp coct coep cok- coke coko cook coop coot cope copo copp copr copt cor- corc core cork coro corp corr cort cotc cote coto cott cove covo cpce cpep cper cpre cprt cptp cptr cpvc cpvt crcc crce crcr cre- crec cree creo crep cret crkc crkp croc croe crok croo crop cror crot crpc crrt crtc crtp crtv ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp ctvo ctvt cvcc cver cvet cvrr cvte eccc ecce ecco ecct ecko eco- ecop ecot ecpp ecrc ecrr ecrv ect- ectc ecto ectv eeee eeke eeoc eerc eero eetc eete ekco ekek eker eket ekpe ekpo eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp epro eprp epte eptv ercc erce ercp erec erer eret erev erke eroc eroe eroo erpe errc erre erro erve etcc etco etec etee eter etoe etok etre etro ette etto etvo ever evet evoe evoo evop evre evvk kccc kcck kccr kcct kccv kcec kcee kceo kcep kcet kckc kckk kcko kckr kckv kcoe kcor kcot kcpc kcpo kcpr kcpt kcrc kcro kcrp kcrr kcrt kcrv kctc kcte kcto kctv kcvk kcvo kcvp kcvr kcvv keck keco kecr keek keep keer keet kekc keke keko keok kep- kepc kepe kept ker- kerc kere kerk kero kerp kerr kert kerv ket- ketc kete ketk keto ketp ketr kett ketv keve kevt kkck kkco kkcr kkct kkkk kkoo kkor kkot kkov kkpc kkpk kkpt kkrc kkre kkrk kkro kkrr kkrt kkrv kktc kktk kktv kkvr kkvt kkvv kock kocp koct kokc koke kokk koko kokp kokr kooc kook kooo koop koor koot koov kope kopp kopr kopt korc kore kork koro korr kort korv kotc kote kotk koto kotr kott kotv kovc kove kovk kovo kovr kpcc kpcr kpcv kpek kper kpet kpke kpkk kpkr kpoc kpoe kpok kpoo kpop kppc kppk kppo kppp kppr kppv kprc kpre kprk kpro kprp kprr kprt kprv kpte kpto kptr kptt kptv kpvc kpvr krcc krce krco krec kree krek kreo kret krev krkc krke krkk krko krkr krkv kroc kroe krok kroo krop kror krov krpr krpt krrc krre krrk krro krrr krrt krtc krtk krto krtr krtv krvc krve krvk krvo krvr krvv ktcc ktce ktck ktco ktcr ktcv ktec ktee ktek ktep ktkc ktke ktkk ktko ktkr ktkt ktoc ktoe ktok ktoo ktop ktor ktot ktpk ktpo ktpr ktpt ktrc ktre ktrk ktro ktrp ktrr ktrt ktrv kttc kttk ktto kttp kttr kttt kttv ktvc ktve ktvk ktvo ktvr ktvt kvcc kvce kvck kvco kvcr kvct kvcv kvec kver kvet kvoc kvoe kvok kvoo kvop kvor kvot kvov kvpt kvrc kvre kvro kvrp kvrr kvrv kvtk kvto kvtr kvtt kvtv kvvp kvvr kvvv o-eo occc occt oce ocee ocet ocke ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere oevp oker oket okko okok okor okot okpe okpo okre okro okto oocr ooer oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec orek oreo orer orke orko oro- oroe orok oror orot orpc orpe orro ortc orte orto orve orvr otee otep oter oto- otoe otok otoo otor otov otpp otre otro otte otto ovee over ovet ovo- ovoo ovot ovpp ovre pccc pcce pcep pcer pcoe pcpp pcrc pcre pcte pctv pece peck peco pecr pect peec peek peep peer peet peev peke pekk peko peor pepe pepo per- perc pere perk pero perp perr pert perv pete peto petr pett poce pock poco poer poet poke poko pook poop poor poot pop- popc pope popo popp popt porc pore pork poro porr port potc pote poto pott povo ppcc pper pppo pppp pprc pptt pptv prcc prcp pre- prec pree prek prep pret prev pro- proc proe proo prop prot prov prtc prtp prtr ptcc pter ptop pttc pttk pvco rccc rcep rcet rcpo rcpt rctc rctv rcvr recc rece reck recp recr rect reek reep reet reev reke reko rekt reop reot repe repo repp repr rept rere rero rert rete reto retr rett reve revo revp rocc roce rock roco roer roet roev roke rokk roko rokr rook roop roor root rope ropo rorc rore rork roro rort rotc rote rotk roto rotr rott rove rovo rpet rpoe rrrr rtcc rtce rtee rttp rtve rv-c rver tccc tcep tcov tcpo tctc teck teco tecr tect teec teek teer teet teev teke teok teor tepe tepp ter- terc tere terk tero terp terr tete teto tetr tett toce tock toco toee toek toer toet toke toko took toor toot top- tope topo topp topt topv torc tore tork toro torp torr tort torv totc tote toto totr tott tove tovo tpck tpcp tper tpke tppp tppr tpte tptp tptr trcc tre- trec tree trek treo tret trev troc troe troo trop trot trpc trpe trpp trpv trtc trte trtr ttcp tteo tter ttoe ttop tttt tver tvro tvrr tvtv vecc veck veep veer veet veke veor vepe vepr ver- vere verk vero vert vete veto vetr veve vevo vkor voce voer voet voke vooc voor voot vopt vor- vore voro vort vote voto votp vovk vpro vreo vret vroc vrot vrto vtec vtpr vver vvvv