-er -ic c-- ccc cce ccg cci ccn ccr ccs ccu ccx ce- cec cee ceg cei cen cer ces ceu cex cgc cge cgg cgi cgn cgr cgs cgu ci- cic cie cig cii cin cir cis ciu cix cn- cnc cne cng cni cnn cnr cns cnu cnx crc cre crg cri crn crr crs cru crx csc cse csg csi csn csr css csu csx cuc cue cug cui cun cur cus cuu cxc cxi cxr cxs cxx ec- ecc ece ecg eci ecn ecr ecs ecu ecx eec eee eeg een eer ees eex egc ege egg egi egn egr egs egu egx eic eie eig eii ein eir eis eiu eix en- enc ene eng eni enn enr ens enu erc ere erg eri ern err ers eru es- esc ese esg esi esn esr ess esu esx eu- euc eue eug eui eun eur eus eux ex- exc exe exi exr exs exu exx gcc gce gcg gci gcn gcr gcs gcu ge- gec gee geg gei gen ger ges geu gex ggc ggg ggi ggn ggr ggs ggu gic gie gig gii gin gir gis giu gnc gne gni gnn gnr gns gnu grc gre grg gri grn grr grs gru grx gsc gse gsg gsi gsn gsr gss gsu gsx gu- guc gue gug gui gun gur gus guu gxs icc ice icg ici icn icr ics icu ie- iec iee ieg iei ien ier ies iex igc ige igg igi ign igr igs igu iic iie iii iin iir iis iiu iix in- inc ine ing ini inn inr ins inu inx ir- irc ire irg iri irn irr irs iru irx is- isc ise isg isi isn isr iss isu iu- iuc iue iug iui iur ius ixc ixe ixi ixn n-i ncc nce ncg nci ncn ncr ncs ncu ncx ne- nec nee neg nei nen ner nes neu nex ngc nge ngg ngi ngn ngs ngu nic nie nig nii nin nir nis niu nix nnc nne nng nni nnn nns nnu nrc nre nrg nri nrn nrr nrs nru nrx nsc nse nsg nsi nsn nsr nss nsu nsx nuc nue nug nui nun nur nus nuu nux nxc rcc rce rcg rci rcn rcr rcs rcu rcx re- rec ree reg rei ren rer res reu rex rgc rge rgg rgi rgn rgr rgs rgx ric rie rig rii rin rir ris rix rnc rng rni rnn rnr rns rnu rrc rrg rri rrn rrr rrs rru rsc rse rsg rsi rsn rsr rss rsu rsx ruc rue rug rui run rur rus ruu rux rxr rxs scc sce scg sci scn scr scs scu scx se- sec see seg sei sen ser ses seu sex sgc sge sgg sgi sgn sgr sgs sgu sgx sic sie sig sii sin sir sis siu six snc sne sng sni snn snr sns snu sr- src sre srg sri srn srr srs srx ss- ssc sse ssg ssi ssn ssr sss ssu ssx suc sue sug sui sun sur sus suu sux sxc sxi sxn sxs sxu ucc uce ucg uci ucn ucr ucs ucu uec uee ueg uei uen uer ues ugc uge ugg ugi ugn ugr ugs ugu ugx uic uie uig uii uin uir uis uiu un- unc une ung uni unn unr uns unu unx ur- urc ure urg uri urn urr urs uru urx usc use usg usi usn usr uss usu usx uuc uue uug uun uur uus uuu uxc uxr uxu xci xcr xcx xee xeg xen xer xes xeu xex xge xgi xic xie xii xin xis xiu xix xnc xns xnu xrc xrx xsc xsi xss xue xui xun xus xxi xxx