-er -ic c-- ccc cce ccg cci ccn ccr ccs ccx ce- cec cee ceg cei cen cer ces cex cgc cge cgg cgi cgn cgr cgs ci- cic cie cig cii cin cir cis cix cn- cnc cne cng cni cnn cnr cns cnx crc cre crg cri crn crr crs crx csc cse csg csi csn csr css csx cxc cxi cxr cxs cxx ec- ecc ece ecg eci ecn ecr ecs ecx eec eee eeg een eer ees eex egc ege egg egi egn egr egs egx eic eie eig eii ein eir eis eix en- enc ene eng eni enn enr ens erc ere erg eri ern err ers es- esc ese esg esi esn esr ess esx ex- exc exe exi exr exs exx gcc gce gcg gci gcn gcr gcs ge- gec gee geg gei gen ger ges gex ggc ggg ggi ggn ggr ggs gic gie gig gii gin gir gis gnc gne gni gnn gnr gns grc gre grg gri grn grr grs grx gsc gse gsg gsi gsn gsr gss gsx gxs icc ice icg ici icn icr ics ie- iec iee ieg iei ien ier ies iex igc ige igg igi ign igr igs iic iie iii iin iir iis iix in- inc ine ing ini inn inr ins inx ir- irc ire irg iri irn irr irs irx is- isc ise isg isi isn isr iss ixc ixe ixi ixn n-i ncc nce ncg nci ncn ncr ncs ncx ne- nec nee neg nei nen ner nes nex ngc nge ngg ngi ngn ngs nic nie nig nii nin nir nis nix nnc nne nng nni nnn nns nrc nre nrg nri nrn nrr nrs nrx nsc nse nsg nsi nsn nsr nss nsx nxc rcc rce rcg rci rcn rcr rcs rcx re- rec ree reg rei ren rer res rex rgc rge rgg rgi rgn rgr rgs rgx ric rie rig rii rin rir ris rix rnc rng rni rnn rnr rns rrc rrg rri rrn rrr rrs rsc rse rsg rsi rsn rsr rss rsx rxr rxs scc sce scg sci scn scr scs scx se- sec see seg sei sen ser ses sex sgc sge sgg sgi sgn sgr sgs sgx sic sie sig sii sin sir sis six snc sne sng sni snn snr sns sr- src sre srg sri srn srr srs srx ss- ssc sse ssg ssi ssn ssr sss ssx sxc sxi sxn sxs xci xcr xcx xee xeg xen xer xes xex xge xgi xic xie xii xin xis xix xnc xns xrc xrx xsc xsi xss xxi xxx