cccc ccee ccgc ccgt ccoc ccrc ccre ccrg ccrt cctc cctt cec- cece ceco cect ceec cege cego ceor cer- cerc cere cero cert cet- cete ceto cgcc cgcg cger cgro coce coco coct cogo coot cor- corc core corg coro corr cort cotc cote coto cott crcc crce crcr cre- crec cree creg creo cret croc croe croo cror crot crrt crtc ctec ctge ctor ctot ctrc eccc ecce ecco ecct eco- ecog ecot ecrc ecrr ect- ectc ecto eeee eeoc eerc eerg eero eetc eete egcc egcg egcr egec egee eger egge eggo ego- egor egot egre egte eore eotc eoto ercc erce erec erer eret erg- ergg ergo eroc eroe eroo errc erre erro etcc etco etec etee eter etoe etre etro ette etto gc-c gccc gcet gcrg gctc gece geer geet gege gegg gego geo- geog gere gero gert gete getg geto gett gggg goce gocr goer gogo goog goor goot gore gorg goro gorr gort gote goto gott grcc grce grec gree greg gret groc grog groo gror grot grrr grtc gtco gtcr gtoe o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo oec- oecc oeec oere ogee oger ogge ogog ogre ogro oocr ooer oooo oore oort orce orco ore- orec oreg oreo orer orge orgo oro- oroe oror orot orro ortc orte orto otee oter oto- otoe otog otoo otor otre otro otte otto rccc rcet rcgc rcrg rctc rctg recc rece recr rect reet rege rego regr regt reog reot rere rerg rero rert rete reto retr rett rgtr rocc roce roco roeg roer roet roge rogg rogo roog roor root rorc rore roro rort rotc rote rotg roto rotr rott rrrr rtcc rtce rtcg rtee tccc tctc teco tecr tect teec teer teet tegg tego tegt teor ter- terc tere tero terr tete teto tetr tett tgcc tgtc toce toco toee toer toet toge togo togr togt toor toot torc tore torg toro torr tort totc tote toto totr tott trcc tre- trec tree treg treo tret trge troc troe trog troo trot trtc trte trtr tteo tter ttoe tttt