cccc ccci ccee ccgc ccgt ccic ccii ccir ccoc ccrc ccre ccrg ccri ccrt cctc cctt cec- cece ceci ceco cect ceec cege cego ceor cer- cerc cere ceri cero cert cet- cete ceti ceto cgcc cgcg cger cgro cicc cici cico cicr cict ciee cier cigi ciii ciit cior circ cire ciri ciro cirr cirt cite citg citi cito citt coce coco coct cogi cogo coir coit coot cor- corc core corg cori coro corr cort cotc cote coti coto cott crcc crce crcr cre- crec cree creg crei creo cret cric crie crig crit croc croe croo cror crot crrt crtc ctec ctge ctic ctor ctot ctrc eccc ecce ecci ecco ecct ecig ecit eco- ecog ecot ecrc ecri ecrr ect- ectc ecto eeee eeoc eerc eerg eero eetc eete egcc egcg egcr egec egee eger egge eggi eggo egir ego- egoi egor egot egre egri egte eico eiec eiei eier eige eigg eire eitc eiti eito eitr eoir eore eori eotc eoto ercc erce erec erei erer eret erg- ergg ergi ergo eric erie erio erit eroc eroe eroi eroo errc erre erro etcc etco etec etee eter etic etio etoe etre etro ette etti etto gc-c gccc gcet gcic gcii gcrg gctc gece geer geet gege gegg gego geic geie geig geir geit geo- geog gere geri gero gert gete getg geti geto gett gggg gicr gier giet gige gigg gigi gigo giog gioi gire girg giri giro girr girt gite gito goce gocr goer gogi gogo goit goog gooi goor goot gore gorg gori goro gorr gort gote goti goto gott grcc grce grec gree greg gret gric grie grig grit groc grog groi groo gror grot grrr grtc gtco gtcr gtoe i-go iccc icci icco iccr icct icec icee icer icet icgc icoc icor icrc icre icrr icrt iecc ieet ieie ieio iere ieri iett igcc iger iget igoe igoo igor igot igri iiie iiii iiio iiit iioi iioo iirc iitr iitt iocg ioci ioee iogt ioii ioio ioit iooi iooo iore iorg iori iote ioto ircc ircg iree irer iri- iric irie irig irio iroc irrc irre irri irte irti itec iter itet itgc itgo itic itie itoi itoo itor itri itto o-eo occc occi occt oce ocee ocet ocre ocro ocrr oct- octe octi octo oec- oecc oeec oere oeti ogee oger ogge oggi ogog ogoi ogre ogri ogro oici oier oigo oiii oire oirt oitc oiti oocr ooer oooo oore oort orce orci orco ore- orec oreg oreo orer orge orgo ori- oric orie orig orio orit oro- oroe oror orot orri orro ortc orte orto otee oter otic otit oto- otoe otog otoo otor otre otro otte otti otto rccc rcet rcgc rcic rcrg rctc rctg rcti recc rece reci recr rect reet rege regi rego regr regt reii reir reit reog reot rere rerg reri rero rert rete reti reto retr rett rgit rgtr ricc rice rico rict rier riet rige rigg rigi rigo riot rire riri rite riti rito ritt rocc roce roco roeg roer roet roge rogg rogi rogo roig roio roir roit roog rooi roor root rorc rore rori roro rort rotc rote rotg roti roto rotr rott rrrr rtcc rtce rtcg rtee rtei tccc tctc teco tecr tect teec teer teet tegg tegi tego tegt teic teie teir teor ter- terc tere teri tero terr tete teti teto tetr tett tgcc tgtc ticc tice tico tie- tiee tiei tieo tier tiet tige tigi tigr tiit tire tiri tiro tirr titc tite titi tito titt toce toci toco toee toei toer toet toge togo togr togt toie toit toor toot torc tore torg tori toro torr tort totc tote toti toto totr tott trcc tre- trec tree treg trei treo tret trge tri- tric trie trig trio trit troc troe trog troi troo trot trtc trte trtr tteo tter ttoe tttt