-er -ic c-- ccc cce ccg cci ccm ccr ccs ce- cec cee ceg cei cem cer ces cgc cge cgg cgi cgm cgr cgs ci- cic cie cig cii cim cir cis cmc cme cmg cmi cmm cmr cms crc cre crg cri crm crr crs csc cse csg csi csm csr css ec- ecc ece ecg eci ecm ecr ecs eec eee eeg eem eer ees egc ege egg egi egm egr egs eic eie eig eii eim eir eis em- emc eme emg emi emm emr ems erc ere erg eri erm err ers es- esc ese esg esi esm esr ess gcc gce gcg gci gcm gcr gcs ge- gec gee geg gei gem ger ges ggc ggg ggi ggm ggr ggs gic gie gig gii gim gir gis gmc gme gmg gmi gmm gmr gms grc gre grg gri grm grr grs gsc gse gsg gsi gsm gsr gss icc ice icg ici icm icr ics ie- iec iee ieg iei iem ier ies igc ige igg igi igm igr igs iic iie iii iim iir iis im- imc ime img imi imm ims ir- irc ire irg iri irm irr irs is- isc ise isg isi ism isr iss m-r mc- mcc mce mcg mci mcm mcr mcs mec mee meg mei mem mer mes mgc mge mgi mgm mgr mgs mi- mic mie mig mii mim mir mis mmc mme mmg mmi mmm mmr mms mrc mre mrg mri mrm mrr mrs msc mse msg msi msm msr mss rcc rce rcg rci rcm rcr rcs re- rec ree reg rei rem rer res rgc rge rgg rgi rgr rgs ric rie rig rii rim rir ris rmc rme rmg rmi rmm rmr rms rrc rrg rri rrm rrr rrs rsc rse rsg rsi rsm rsr rss scc sce scg sci scm scr scs se- sec see seg sei sem ser ses sgc sge sgg sgi sgm sgr sgs sic sie sig sii sim sir sis smc sme smg smi smm smr sms sr- src sre srg sri srm srr srs ss- ssc sse ssg ssi ssm ssr sss