c-- ccc cce ccg cck ccs ce- cec cee ceg cek ces cgc cge cgg cgs ckc cks csc cse csg csk css ec- ecc ece ecg eck ecs eec eee eeg eek ees egc ege egg egs ekc eke ekg eks es- esc ese esg esk ess gcc gce gcg gck gcs ge- gec gee geg gek ges ggc ggg ggs gks gsc gse gsg gsk gss kcc kce kcg kck kcs ke- kec kee keg kek kes kgc kgs kkc kke kkk kks ksc kse ksg ksk kss scc sce scg sck scs se- sec see seg sek ses sgc sge sgg sgk sgs sk- skc ske skg skk sks ss- ssc sse ssg ssk sss