-er c-- ccc cce ccg ccm cco ccp ccr ccs ce- cec cee ceg cem ceo cep cer ces cgc cge cgg cgm cgo cgp cgr cgs cmc cme cmg cmm cmo cmp cmr cms co- coc coe cog com coo cop cor cos cpc cpe cpg cpm cpo cpp cpr cps crc cre crg crm cro crp crr crs csc cse csg csm cso csp csr css ec- ecc ece ecg ecm eco ecr ecs eec eee eeg eem eeo eep eer ees egc ege egg egm ego egp egr egs em- emc eme emg emm emo emp emr ems eo- eoc eoe eog eom eoo eop eor eos ep- epc epe epg epm epo epp epr eps erc ere erg erm ero erp err ers es- esc ese esg esm eso esp esr ess g-p gcc gce gcg gcm gco gcp gcr gcs ge- gec gee geg gem geo gep ger ges ggc ggg ggm ggo ggp ggr ggs gmc gme gmg gmm gmo gmp gmr gms goc goe gog gom goo gop gor gos gpc gpe gpg gpm gpo gpp gpr gps grc gre grg grm gro grp grr grs gsc gse gsg gsm gso gsp gsr gss m-o m-r mc- mcc mce mcg mcm mco mcp mcr mcs mec mee meg mem meo mep mer mes mgc mge mgm mgo mgp mgr mgs mmc mme mmg mmm mmo mmp mmr mms moc moe mog mom moo mop mor mos mpc mpe mpg mpm mpo mpp mpr mps mrc mre mrg mrm mro mrp mrr mrs msc mse msg msm mso msp msr mss oc- occ ocg ocm oco ocp ocr ocs oec oee oeg oem oeo oep oer oes ogc oge ogg ogo ogp ogs om- omc ome omg omm omo omp omr oms oo- ooc oog oom ooo oop oor oos op- opc ope opg opm opo opp opr ops or- orc ore org orm oro orp orr ors os- osc ose osg osm oso osp osr oss p-p pcc pce pcg pcm pco pcp pcr pcs pec pee peg pem peo pep per pes pgc pge pgg pgm pgo pgp pgr pgs pmc pme pmg pmm pmo pmp pmr pms poc poe pog pom poo pop por pos ppc ppe ppg ppm ppo ppp ppr pps prc pre prg prm pro prp prr prs ps- psc pse psg psm pso psp psr pss rcc rce rcg rcm rco rcp rcr rcs re- rec ree reg rem reo rep rer res rgc rge rgg rgo rgp rgr rgs rmc rme rmg rmm rmo rmp rmr rms roc roe rog rom roo rop ror ros rpc rpe rpg rpm rpo rpp rpr rps rrc rrg rrm rrp rrr rrs rsc rse rsg rsm rso rsp rsr rss scc sce scg scm sco scp scr scs se- sec see seg sem seo sep ser ses sgc sge sgg sgm sgo sgp sgr sgs smc sme smg smm smo smp smr sms soc soe sog som soo sop sor sos spc spe spg spm spo spp spr sps sr- src sre srg srm sro srp srr srs ss- ssc sse ssg ssm sso ssp ssr sss