c-- ccc cce ccg ccn cco ccs ce- cec cee ceg cen ceo ces cgc cge cgg cgn cgo cgs cn- cnc cne cng cnn cno cns co- coc coe cog con coo cos csc cse csg csn cso css ec- ecc ece ecg ecn eco ecs eec eee eeg een eeo ees egc ege egg egn ego egs en- enc ene eng enn eno ens eo- eoc eoe eog eon eoo eos es- esc ese esg esn eso ess gcc gce gcg gcn gco gcs ge- gec gee geg gen geo ges ggc ggg ggn ggo ggs gnc gne gnn gno gns goc goe gog gon goo gos gsc gse gsg gsn gso gss ncc nce ncg ncn nco ncs ne- nec nee neg nen neo nes ngc nge ngg ngn ngo ngs nnc nne nng nnn nno nns no- noc noe nog non noo nos nsc nse nsg nsn nso nss oc- occ ocg ocn oco ocs oec oee oeg oen oeo oes ogc oge ogg ogn ogo ogs on- onc one ong onn ono ons oo- ooc oog oon ooo oos os- osc ose osg osn oso oss scc sce scg scn sco scs se- sec see seg sen seo ses sgc sge sgg sgn sgo sgs snc sne sng snn sno sns soc soe sog son soo sos ss- ssc sse ssg ssn sso sss