cccc cccp ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt cec- cece ceco cecp cect ceec ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp coce coco cocp coct coep coop coot cope copo copp copr copt cor- corc core coro corp corr cort cotc cote coto cott cpce cpep cper cpre cprt cptp cptr crcc crce crcr cre- crec cree creo crep cret croc croe croo crop cror crot crpc crrt crtc crtp ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp eccc ecce ecco ecct eco- ecop ecot ecpp ecrc ecrr ect- ectc ecto eeee eeoc eerc eero eetc eete eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp epro eprp epte ercc erce ercp erec erer eret eroc eroe eroo erpe errc erre erro etcc etco etec etee eter etoe etre etro ette etto o-eo occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere oocr ooer oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec oreo orer oro- oroe oror orot orpc orpe orro ortc orte orto otee otep oter oto- otoe otoo otor otpp otre otro otte otto pccc pcce pcep pcer pcoe pcpp pcrc pcre pcte pece peco pecr pect peec peep peer peet peor pepe pepo per- perc pere pero perp perr pert pete peto petr pett poce poco poer poet poop poor poot pop- popc pope popo popp popt porc pore poro porr port potc pote poto pott ppcc pper pppo pppp pprc pptt prcc prcp pre- prec pree prep pret pro- proc proe proo prop prot prtc prtp prtr ptcc pter ptop pttc rccc rcep rcet rcpo rcpt rctc recc rece recp recr rect reep reet reop reot repe repo repp repr rept rere rero rert rete reto retr rett rocc roce roco roer roet roop roor root rope ropo rorc rore roro rort rotc rote roto rotr rott rpet rpoe rrrr rtcc rtce rtee rttp tccc tcep tcpo tctc teco tecr tect teec teer teet teor tepe tepp ter- terc tere tero terp terr tete teto tetr tett toce toco toee toer toet toor toot top- tope topo topp topt torc tore toro torp torr tort totc tote toto totr tott tpcp tper tppp tppr tpte tptp tptr trcc tre- trec tree treo tret troc troe troo trop trot trpc trpe trpp trtc trte trtr ttcp tteo tter ttoe ttop tttt