-er a-a aaa aae aag aan aar aas aau aax aea aee aeg aen aer aes aeu aex ag- aga age agg agn agr ags agu agx an- ana ane ang ann anr ans anu anx ar- ara are arg arn arr ars aru arx as- asa ase asg asn asr ass asu asx au- aua aue aug aun aur aus aux ax- axa axe axn axr axs axx eaa eae eag ean ear eas eau eax eea eee eeg een eer ees eex ega ege egg egn egr egs egu egx en- ena ene eng enn enr ens enu era ere erg ern err ers eru es- esa ese esg esn esr ess esu esx eu- eua eue eug eun eur eus eux ex- exa exe exr exs exu exx gaa gae gag gan gar gas gau ge- gea gee geg gen ger ges geu gex gga ggg ggn ggr ggs ggu gna gne gnn gnr gns gnu gra gre grg grn grr grs gru grx gsa gse gsg gsn gsr gss gsu gsx gu- gua gue gug gun gur gus guu gxa gxs naa nae nag nan nar nas nau nax ne- nea nee neg nen ner nes neu nex nga nge ngg ngn ngs ngu nna nne nng nnn nns nnu nra nre nrg nrn nrr nrs nru nrx nsa nse nsg nsn nsr nss nsu nsx nua nue nug nun nur nus nuu nux ra- raa rae rag ran rar ras rau rax re- rea ree reg ren rer res reu rex rga rge rgg rgn rgr rgs rgx rna rng rnn rnr rns rnu rra rrg rrn rrr rrs rru rsa rse rsg rsn rsr rss rsu rsx rua rue rug run rur rus ruu rux rxr rxs saa sae sag san sar sas sau sax se- sea see seg sen ser ses seu sex sga sge sgg sgn sgr sgs sgu sgx sna sne sng snn snr sns snu sr- sra sre srg srn srr srs srx ss- ssa sse ssg ssn ssr sss ssu ssx sua sue sug sun sur sus suu sux sxn sxs sxu ua- uaa uae uag uan uar uas uau uea uee ueg uen uer ues uga uge ugg ugn ugr ugs ugu ugx un- una une ung unn unr uns unu unx ur- ura ure urg urn urr urs uru urx usa use usg usn usr uss usu usx uua uue uug uun uur uus uuu uxr uxu xaa xag xan xar xas xau xee xeg xen xer xes xeu xex xge xna xns xnu xrx xsa xss xue xun xus xxx