-er c-- ccc cce ccg cch cco ccr ccs ce- cec cee ceg ceh ceo cer ces cgc cge cgg cgh cgo cgr cgs ch- chc che chg chh cho chr chs co- coc coe cog coh coo cor cos crc cre crg crh cro crr crs csc cse csg csh cso csr css ec- ecc ece ecg ech eco ecr ecs eec eee eeg eeo eer ees egc ege egg egh ego egr egs ehc ehe ehg ehh eho ehr ehs eo- eoc eoe eog eoh eoo eor eos erc ere erg erh ero err ers es- esc ese esg esh eso esr ess gcc gce gcg gch gco gcr gcs ge- gec gee geg geh geo ger ges ggc ggg ggh ggo ggr ggs ghc ghe ghg ghh gho ghr ghs goc goe gog goh goo gor gos grc gre grg grh gro grr grs gsc gse gsg gso gsr gss hcc hce hcg hch hco hcr hcs he- hec hee heg heh heo her hes hgc hge hgg hgh hgo hgr hgs hhc hhe hhg hhh hho hhr hhs hoc hoe hog hoh hoo hor hos hr- hrc hre hrg hrh hro hrr hrs hsc hse hsg hsh hsr hss oc- occ ocg och oco ocr ocs oec oee oeg oeh oeo oer oes ogc oge ogg ogh ogo ogs ohc ohe ohg ohh oho ohr ohs oo- ooc oog ooh ooo oor oos or- orc ore org orh oro orr ors os- osc ose osg osh oso osr oss rcc rce rcg rch rco rcr rcs re- rec ree reg reh reo rer res rgc rge rgg rgh rgo rgr rgs rh- rhc rhe rhg rhh rho rhr rhs roc roe rog roh roo ror ros rrc rrg rrh rrr rrs rsc rse rsg rsh rso rsr rss scc sce scg sch sco scr scs se- sec see seg seh seo ser ses sgc sge sgg sgh sgo sgr sgs sh- shc she shg shh sho shr shs soc soe sog soh soo sor sos sr- src sre srg srh sro srr srs ss- ssc sse ssg ssh sso ssr sss