-er a-a a-t aaa aae aag aan aar aas aat aax aea aee aeg aen aer aes aet aex ag- aga age agg agn agr ags agt agx an- ana ane ang ann anr ans ant anx ar- ara are arg arn arr ars art arx as- asa ase asg asn asr ass ast asx at- ata ate atg atn atr ats att atx ax- axa axe axn axr axs axt axx eaa eae eag ean ear eas eat eax eea eee eeg een eer ees eet eex ega ege egg egn egr egs egt egx en- ena ene eng enn enr ens ent era ere erg ern err ers ert es- esa ese esg esn esr ess est esx eta ete etg etn etr ets ett etx ex- exa exe exr exs ext exx gaa gae gag gan gar gas gat ge- gea gee geg gen ger ges get gex gga ggg ggn ggr ggs ggt gna gne gnn gnr gns gnt gra gre grg grn grr grs grt grx gsa gse gsg gsn gsr gss gst gsx gta gte gtg gtn gtr gts gtt gtx gxa gxs gxt naa nae nag nan nar nas nat nax ne- nea nee neg nen ner nes net nex nga nge ngg ngn ngs ngt nna nne nng nnn nns nnt nra nre nrg nrn nrr nrs nrt nrx nsa nse nsg nsn nsr nss nst nsx nta nte ntg ntn ntr nts ntt ntx nxt ra- raa rae rag ran rar ras rat rax re- rea ree reg ren rer res ret rex rga rge rgg rgn rgr rgs rgt rgx rna rng rnn rnr rns rnt rra rrg rrn rrr rrs rrt rsa rse rsg rsn rsr rss rst rsx rta rte rtg rtn rtr rts rtt rtx rxr rxs saa sae sag san sar sas sat sax se- sea see seg sen ser ses set sex sga sge sgg sgn sgr sgs sgt sgx sna sne sng snn snr sns snt sr- sra sre srg srn srr srs srt srx ss- ssa sse ssg ssn ssr sss sst ssx sta ste stg stn str sts stt stx sxn sxs sxt t-x taa tae tag tan tar tas tat tax te- tea tee teg ten ter tes tet tex tga tge tgg tgn tgr tgs tgt tna tne tng tnn tnr tns tnt tnx tra tre trg trn trr trs trt trx tsa tse tsg tsn tsr tss tst tsx tta tte ttg ttn ttr tts ttt ttx txe txn txs txt xaa xag xan xar xas xat xee xeg xen xer xes xet xex xge xna xns xrt xrx xsa xss xst xtr xts xtx xxx