-er eee eef eeg een eer ees ef- efe eff efg efr efs ege egf egg egn egr egs en- ene enf eng enn enr ens ere erf erg ern err ers es- ese esf esg esn esr ess fee fef feg fen fer fes ffe fff ffg ffn ffr ffs fge fgf fgg fgn fgr fgs fne fnf fng fnn fnr fns fre frf frg frn frr frs fse fsf fsg fsn fsr fss ge- gee gef geg gen ger ges gfe gff gfr gfs ggg ggn ggr ggs gne gnf gnn gnr gns gre grf grg grn grr grs gse gsf gsg gsn gsr gss ne- nee nef neg nen ner nes nfe nff nfn nfr nfs nge ngf ngg ngn ngs nne nnf nng nnn nns nre nrf nrg nrn nrr nrs nse nsf nsg nsn nsr nss re- ree ref reg ren rer res rfe rff rfg rfn rfr rfs rge rgf rgg rgn rgr rgs rng rnn rnr rns rrf rrg rrn rrr rrs rse rsf rsg rsn rsr rss se- see sef seg sen ser ses sfe sff sfg sfn sfr sfs sge sgf sgg sgn sgr sgs sne snf sng snn snr sns sr- sre srf srg srn srr srs ss- sse ssf ssg ssn ssr sss