c-- ccc cce ccg ccm ccs ce- cec cee ceg cem ces cgc cge cgg cgm cgs cmc cme cmg cmm cms csc cse csg csm css ec- ecc ece ecg ecm ecs eec eee eeg eem ees egc ege egg egm egs em- emc eme emg emm ems es- esc ese esg esm ess gcc gce gcg gcm gcs ge- gec gee geg gem ges ggc ggg ggm ggs gmc gme gmg gmm gms gsc gse gsg gsm gss mc- mcc mce mcg mcm mcs mec mee meg mem mes mgc mge mgm mgs mmc mme mmg mmm mms msc mse msg msm mss scc sce scg scm scs se- sec see seg sem ses sgc sge sgg sgm sgs smc sme smg smm sms ss- ssc sse ssg ssm sss