-er -ic c-- ccc ccd cce ccg cci ccn ccr ccs ccx cdc cdd cde cdg cdi cdn cdr cds cdx ce- cec ced cee ceg cei cen cer ces cex cgc cgd cge cgg cgi cgn cgr cgs ci- cic cid cie cig cii cin cir cis cix cn- cnc cnd cne cng cni cnn cnr cns cnx crc crd cre crg cri crn crr crs crx csc csd cse csg csi csn csr css csx cxc cxi cxr cxs cxx dcc dcd dce dcg dci dcn dcr dcs dcx ddc ddd dde ddg ddi ddn ddr dds ddx de- dec ded dee deg dei den der des dex dgc dgd dge dgg dgi dgn dgr dgs di- dic did die dig dii din dir dis dix dnc dnd dne dng dni dnn dnr dns drc drd dre drg dri drn drr drs drx dsc dsd dse dsg dsi dsn dsr dss dsx dxc dxd dxi dxn dxr dxs dxx ec- ecc ecd ece ecg eci ecn ecr ecs ecx ed- edc edd ede edg edi edn edr eds edx eec eed eee eeg een eer ees eex egc egd ege egg egi egn egr egs egx eic eid eie eig eii ein eir eis eix en- enc end ene eng eni enn enr ens erc erd ere erg eri ern err ers es- esc esd ese esg esi esn esr ess esx ex- exc exd exe exi exr exs exx g-d gcc gcd gce gcg gci gcn gcr gcs gdc gdd gde gdi gdn gdr gds gdx ge- gec ged gee geg gei gen ger ges gex ggc ggd ggg ggi ggn ggr ggs gic gid gie gig gii gin gir gis gnc gnd gne gni gnn gnr gns grc grd gre grg gri grn grr grs grx gsc gsd gse gsg gsi gsn gsr gss gsx gxs i-d icc icd ice icg ici icn icr ics idc idd ide idg idi idn idr ids idx ie- iec ied iee ieg iei ien ier ies iex igc igd ige igg igi ign igr igs iic iid iie iii iin iir iis iix in- inc ind ine ing ini inn inr ins inx ir- irc ird ire irg iri irn irr irs irx is- isc isd ise isg isi isn isr iss ixc ixe ixi ixn n-i ncc ncd nce ncg nci ncn ncr ncs ncx ndc ndd nde ndg ndi ndn ndr nds ne- nec ned nee neg nei nen ner nes nex ngc ngd nge ngg ngi ngn ngs nic nid nie nig nii nin nir nis nix nnc nne nng nni nnn nns nrc nrd nre nrg nri nrn nrr nrs nrx nsc nsd nse nsg nsi nsn nsr nss nsx nxc nxd rcc rcd rce rcg rci rcn rcr rcs rcx rdc rdd rde rdg rdi rdn rdr rds rdx re- rec red ree reg rei ren rer res rex rgc rgd rge rgg rgi rgn rgr rgs rgx ric rid rie rig rii rin rir ris rix rnc rnd rng rni rnn rnr rns rrc rrd rrg rri rrn rrr rrs rsc rsd rse rsg rsi rsn rsr rss rsx rxr rxs scc scd sce scg sci scn scr scs scx sdc sdd sde sdg sdi sdn sdr sds se- sec sed see seg sei sen ser ses sex sgc sgd sge sgg sgi sgn sgr sgs sgx sic sid sie sig sii sin sir sis six snc snd sne sng sni snn snr sns sr- src srd sre srg sri srn srr srs srx ss- ssc ssd sse ssg ssi ssn ssr sss ssx sxc sxi sxn sxs xcd xci xcr xcx xdc xde xdi xdr xds xed xee xeg xen xer xes xex xge xgi xic xie xii xin xis xix xnc xns xrc xrd xrx xsc xsi xss xxi xxx