c-- ccc ccg ccn cco ccs cct cgc cgg cgn cgo cgs cgt cn- cnc cng cnn cno cns cnt co- coc cog con coo cos cot csc csg csn cso css cst ctc ctg ctn cto cts ctt gcc gcg gcn gco gcs gct ggc ggg ggn ggo ggs ggt gnc gnn gno gns gnt goc gog gon goo gos got gsc gsg gsn gso gss gst gtc gtg gtn gto gts gtt ncc ncg ncn nco ncs nct ngc ngg ngn ngo ngs ngt nnc nng nnn nno nns nnt no- noc nog non noo nos not nsc nsg nsn nso nss nst ntc ntg ntn nto nts ntt oc- occ ocg ocn oco ocs oct ogc ogg ogn ogo ogs ogt on- onc ong onn ono ons ont oo- ooc oog oon ooo oos oot os- osc osg osn oso oss ost ot- otc otg otn oto ots ott scc scg scn sco scs sct sgc sgg sgn sgo sgs sgt snc sng snn sno sns snt soc sog son soo sos sot ss- ssc ssg ssn sso sss sst stc stg stn sto sts stt tcc tcg tcn tco tcs tct tgc tgg tgn tgo tgs tgt tnc tng tnn tno tns tnt to- toc tog ton too tos tot tsc tsg tsn tso tss tst ttc ttg ttn tto tts ttt