c-- ccc cce ccg cck cco ccs cct ce- cec cee ceg cek ceo ces cet cgc cge cgg cgo cgs cgt ckc cko cks ckt co- coc coe cog cok coo cos cot csc cse csg csk cso css cst ctc cte ctg ctk cto cts ctt ec- ecc ece ecg eck eco ecs ect eec eee eeg eek eeo ees eet egc ege egg ego egs egt ekc eke ekg eko eks ekt eo- eoc eoe eog eok eoo eos eot es- esc ese esg esk eso ess est etc ete etg etk eto ets ett gcc gce gcg gck gco gcs gct ge- gec gee geg gek geo ges get ggc ggg ggo ggs ggt gko gks gkt goc goe gog gok goo gos got gsc gse gsg gsk gso gss gst gtc gte gtg gtk gto gts gtt k-t kcc kce kcg kck kcs kct ke- kec kee keg kek keo kes ket kgc kgo kgs kkc kke kkk kks kkt koc koe kog kok koo kos kot ksc kse ksg ksk kso kss kst ktc kte ktg ktk kto kts ktt oc- occ ocg ock oco ocs oct oec oee oeg oeo oes oet ogc oge ogg ogo ogs ogt okc oke okg okk oko oks oo- ooc oog ook ooo oos oot os- osc ose osg osk oso oss ost ot- otc ote otg otk oto ots ott scc sce scg sck sco scs sct se- sec see seg sek seo ses set sgc sge sgg sgk sgo sgs sgt sk- skc ske skg skk sko sks skt soc soe sog sok soo sos sot ss- ssc sse ssg ssk sso sss sst stc ste stg stk sto sts stt tcc tce tcg tck tco tcs tct te- tec tee teg tek teo tes tet tgc tge tgg tgk tgo tgs tgt tkc tke tkg tkk tko tks tkt to- toc toe tog tok too tos tot tsc tse tsg tsk tso tss tst ttc tte ttg ttk tto tts ttt