-er -ic c-- ccc cce ccg cci ccn ccp ccr ccs ce- cec cee ceg cei cen cep cer ces cgc cge cgg cgi cgn cgp cgr cgs ci- cic cie cig cii cin cip cir cis cn- cnc cne cng cni cnn cnp cnr cns cpc cpe cpg cpi cpn cpp cpr cps crc cre crg cri crn crp crr crs csc cse csg csi csn csp csr css ec- ecc ece ecg eci ecn ecr ecs eec eee eeg een eep eer ees egc ege egg egi egn egp egr egs eic eie eig eii ein eip eir eis en- enc ene eng eni enn enp enr ens ep- epc epe epg epi epn epp epr eps erc ere erg eri ern erp err ers es- esc ese esg esi esn esp esr ess g-p gcc gce gcg gci gcn gcp gcr gcs ge- gec gee geg gei gen gep ger ges ggc ggg ggi ggn ggp ggr ggs gic gie gig gii gin gip gir gis gnc gne gni gnn gnp gnr gns gpc gpe gpg gpi gpn gpp gpr gps grc gre grg gri grn grp grr grs gsc gse gsg gsi gsn gsp gsr gss icc ice icg ici icn icp icr ics ie- iec iee ieg iei ien iep ier ies igc ige igg igi ign igp igr igs iic iie iii iin iip iir iis in- inc ine ing ini inn inp inr ins ipc ipe ipg ipi ipn ipp ipr ips ir- irc ire irg iri irn irp irr irs is- isc ise isg isi isn isp isr iss n-i ncc nce ncg nci ncn ncp ncr ncs ne- nec nee neg nei nen nep ner nes ngc nge ngg ngi ngn ngp ngs nic nie nig nii nin nip nir nis nnc nne nng nni nnn nnp nns npc npe npg npi npn npp npr nps nrc nre nrg nri nrn nrp nrr nrs nsc nse nsg nsi nsn nsp nsr nss p-p pcc pce pcg pci pcn pcp pcr pcs pec pee peg pei pen pep per pes pgc pge pgg pgi pgn pgp pgr pgs pic pie pig pii pin pip pir pis pn- pnc pne png pni pnn pnp pnr pns ppc ppe ppg ppi ppn ppp ppr pps prc pre prg pri prn prp prr prs ps- psc pse psg psi psn psp psr pss rcc rce rcg rci rcn rcp rcr rcs re- rec ree reg rei ren rep rer res rgc rge rgg rgi rgn rgp rgr rgs ric rie rig rii rin rip rir ris rnc rng rni rnn rnp rnr rns rpc rpe rpg rpi rpn rpp rpr rps rrc rrg rri rrn rrp rrr rrs rsc rse rsg rsi rsn rsp rsr rss scc sce scg sci scn scp scr scs se- sec see seg sei sen sep ser ses sgc sge sgg sgi sgn sgp sgr sgs sic sie sig sii sin sip sir sis snc sne sng sni snn snp snr sns spc spe spg spi spn spp spr sps sr- src sre srg sri srn srp srr srs ss- ssc sse ssg ssi ssn ssp ssr sss