-er a-a aaa aae aaf aag aan aao aar aas aea aee aef aeg aen aeo aer aes af- afa afe aff afg afn afo afr afs ag- aga age agf agg agn ago agr ags an- ana ane anf ang ann ano anr ans aoa aoe aof aog aon aoo aor aos ar- ara are arf arg arn aro arr ars as- asa ase asf asg asn aso asr ass eaa eae eaf eag ean eao ear eas eea eee eef eeg een eeo eer ees ef- efa efe eff efg efo efr efs ega ege egf egg egn ego egr egs en- ena ene enf eng enn eno enr ens eo- eoa eoe eof eog eon eoo eor eos era ere erf erg ern ero err ers es- esa ese esf esg esn eso esr ess faa fae faf fag fan fao far fas fea fee fef feg fen feo fer fes ffa ffe fff ffg ffn ffo ffr ffs fga fge fgf fgg fgn fgr fgs fna fne fnf fng fnn fnr fns foa foe fof fog fon foo for fos fra fre frf frg frn fro frr frs fsa fse fsf fsg fsn fso fsr fss gaa gae gaf gag gan gao gar gas ge- gea gee gef geg gen geo ger ges gfa gfe gff gfo gfr gfs gga ggg ggn ggo ggr ggs gna gne gnf gnn gno gnr gns goa goe gof gog gon goo gor gos gra gre grf grg grn gro grr grs gsa gse gsf gsg gsn gso gsr gss naa nae naf nag nan nao nar nas ne- nea nee nef neg nen neo ner nes nfa nfe nff nfn nfo nfr nfs nga nge ngf ngg ngn ngo ngs nna nne nnf nng nnn nno nns no- noa noe nof nog non noo nor nos nra nre nrf nrg nrn nro nrr nrs nsa nse nsf nsg nsn nso nsr nss oaa oae oaf oag oan oao oar oas oea oee oef oeg oen oeo oer oes of- ofa ofe off ofg ofn ofo ofr ofs oga oge ogf ogg ogn ogo ogs on- ona one onf ong onn ono onr ons oo- ooa oof oog oon ooo oor oos or- ora ore orf org orn oro orr ors os- osa ose osf osg osn oso osr oss ra- raa rae raf rag ran rao rar ras re- rea ree ref reg ren reo rer res rfa rfe rff rfg rfn rfo rfr rfs rga rge rgf rgg rgn rgo rgr rgs rna rng rnn rno rnr rns roa roe rof rog ron roo ror ros rra rrf rrg rrn rrr rrs rsa rse rsf rsg rsn rso rsr rss saa sae saf sag san sao sar sas se- sea see sef seg sen seo ser ses sfa sfe sff sfg sfn sfo sfr sfs sga sge sgf sgg sgn sgo sgr sgs sna sne snf sng snn sno snr sns soa soe sof sog son soo sor sos sr- sra sre srf srg srn sro srr srs ss- ssa sse ssf ssg ssn sso ssr sss