cccc cccp ccee ccgc ccgt ccoc ccpe ccpp ccpr ccrc ccre ccrg ccrp ccrt cctc cctt cec- cece ceco cecp cect ceec cege cego ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp cgcc cgcg cger cgro cgtp coce coco cocp coct coep cogo coop coot cope copg copo copp copr copt cor- corc core corg coro corp corr cort cotc cote coto cott cpce cpep cper cpre cprt cptp cptr crcc crce crcr cre- crec cree creg creo crep cret croc croe croo crop cror crot crpc crrt crtc crtp ctcp ctec ctep ctge ctor ctot ctpo ctpp ctrc ctrp eccc ecce ecco ecct eco- ecog ecop ecot ecpg ecpp ecrc ecrr ect- ectc ecto eeee eeoc eerc eerg eero eetc eete egcc egcg egcr egec egee eger egge eggo eggp ego- egor egot egpe egpo egre egte eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp epro eprp epte ercc erce ercp erec erer eret erg- ergg ergo eroc eroe eroo erpe errc erre erro etcc etco etec etee eter etoe etre etro ette etto gc-c gccc gcet gcpc gcrg gctc gece geep geer geet gege gegg gego geo- geog gepe gere gero gert gete getg geto gett gggg ggpo goce gocr goer gogo goog goop goor goot gopc gope gopo gore gorg goro gorp gorr gort gote goto gott gper gpgp gpot gprp grcc grce grec gree greg grep gret groc grog groo grop gror grot grpc grrr grtc gtco gtcr gtoe gtop o-eo occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere ogee oger ogge ogog ogre ogro oocr ooer oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec oreg oreo orer orge orgo oro- oroe oror orot orpc orpe orro ortc orte orto otee otep oter oto- otoe otog otoo otor otpp otre otro otte otto pccc pcce pcep pcer pcgg pcoe pcpp pcrc pcre pcte pece peco pecr pect peec peep peer peet pegg pego peor pepe pepo per- perc pere perg pero perp perr pert pete peto petr pett pgcc pgce pger pgrc poce poco poer poet poge pogg pogo poop poor poot pop- popc pope popo popp popt porc pore porg poro porr port potc pote poto pott ppcc pper pppo pppp pprc pptt prcc prcp pre- prec pree preg prep pret pro- proc proe prog proo prop prot prtc prtp prtr ptcc pter ptop pttc rccc rcep rcet rcgc rcpo rcpt rcrg rctc rctg recc rece recp recr rect reep reet rege rego regr regt reog reop reot repe repo repp repr rept rere rerg rero rert rete reto retr rett rgtr rocc roce roco roeg roer roet roge rogg rogo roog roop roor root rope ropo rorc rore roro rort rotc rote rotg roto rotr rott rpet rpoe rrrr rtcc rtce rtcg rtee rttp tccc tcep tcpo tctc teco tecr tect teec teer teet tegg tego tegt teor tepe tepp ter- terc tere tero terp terr tete teto tetr tett tgcc tgtc toce toco toee toer toet toge togo togr togt toor toot top- tope topo topp topt torc tore torg toro torp torr tort totc tote toto totr tott tpcp tpeg tper tppp tppr tpte tptp tptr trcc tre- trec tree treg treo tret trge troc troe trog troo trop trot trpc trpe trpg trpp trtc trte trtr ttcp tteo tter ttoe ttop tttt