-er c-- ccc cce ccg cch cck cco ccr ccs ce- cec cee ceg ceh cek ceo cer ces cgc cge cgg cgh cgo cgr cgs ch- chc che chg chh chk cho chr chs ckc ckh cko cks co- coc coe cog coh cok coo cor cos crc cre crg crh crk cro crr crs csc cse csg csh csk cso csr css ec- ecc ece ecg ech eck eco ecr ecs eec eee eeg eek eeo eer ees egc ege egg egh ego egr egs ehc ehe ehg ehh eho ehr ehs ekc eke ekg ekh eko ekr eks eo- eoc eoe eog eoh eok eoo eor eos erc ere erg erh erk ero err ers es- esc ese esg esh esk eso esr ess gcc gce gcg gch gck gco gcr gcs ge- gec gee geg geh gek geo ger ges ggc ggg ggh ggo ggr ggs ghc ghe ghg ghh gho ghr ghs gkh gko gks goc goe gog goh gok goo gor gos grc gre grg grh grk gro grr grs gsc gse gsg gsk gso gsr gss hcc hce hcg hch hck hco hcr hcs he- hec hee heg heh hek heo her hes hgc hge hgg hgh hgk hgo hgr hgs hhc hhe hhg hhh hhk hho hhr hhs hkg hkh hkk hko hkr hks hoc hoe hog hoh hok hoo hor hos hr- hrc hre hrg hrh hrk hro hrr hrs hsc hse hsg hsh hsk hsr hss kcc kce kcg kch kck kcr kcs ke- kec kee keg keh kek keo ker kes kgc kgh kgo kgs khe khh khk kho khr khs kkc kke kkh kkk kkr kks koc koe kog koh kok koo kor kos krc krg krk kro krr krs ksc kse ksg ksh ksk kso ksr kss oc- occ ocg och ock oco ocr ocs oec oee oeg oeh oeo oer oes ogc oge ogg ogh ogo ogs ohc ohe ohg ohh oho ohr ohs okc oke okg okk oko okr oks oo- ooc oog ooh ook ooo oor oos or- orc ore org orh ork oro orr ors os- osc ose osg osh osk oso osr oss rcc rce rcg rch rco rcr rcs re- rec ree reg reh rek reo rer res rgc rge rgg rgh rgk rgo rgr rgs rh- rhc rhe rhg rhh rho rhr rhs rkc rke rkg rkk rko rks roc roe rog roh rok roo ror ros rrc rrg rrh rrk rrr rrs rsc rse rsg rsh rsk rso rsr rss scc sce scg sch sck sco scr scs se- sec see seg seh sek seo ser ses sgc sge sgg sgh sgk sgo sgr sgs sh- shc she shg shh shk sho shr shs sk- skc ske skg skh skk sko skr sks soc soe sog soh sok soo sor sos sr- src sre srg srh srk sro srr srs ss- ssc sse ssg ssh ssk sso ssr sss