a-a a-t aaa aag aan aar aas aat aax ag- aga agg agn agr ags agt agx an- ana ang ann anr ans ant anx ar- ara arg arn arr ars art arx as- asa asg asn asr ass ast asx at- ata atg atn atr ats att atx ax- axa axn axr axs axt axx gaa gag gan gar gas gat gga ggg ggn ggr ggs ggt gna gnn gnr gns gnt gra grg grn grr grs grt grx gsa gsg gsn gsr gss gst gsx gta gtg gtn gtr gts gtt gtx gxa gxs gxt naa nag nan nar nas nat nax nga ngg ngn ngs ngt nna nng nnn nns nnt nra nrg nrn nrr nrs nrt nrx nsa nsg nsn nsr nss nst nsx nta ntg ntn ntr nts ntt ntx nxt ra- raa rag ran rar ras rat rax rga rgg rgn rgr rgs rgt rgx rna rng rnn rnr rns rnt rra rrg rrn rrr rrs rrt rsa rsg rsn rsr rss rst rsx rta rtg rtn rtr rts rtt rtx rxr rxs saa sag san sar sas sat sax sga sgg sgn sgr sgs sgt sgx sna sng snn snr sns snt sr- sra srg srn srr srs srt srx ss- ssa ssg ssn ssr sss sst ssx sta stg stn str sts stt stx sxn sxs sxt t-x taa tag tan tar tas tat tax tga tgg tgn tgr tgs tgt tna tng tnn tnr tns tnt tnx tra trg trn trr trs trt trx tsa tsg tsn tsr tss tst tsx tta ttg ttn ttr tts ttt ttx txn txs txt xaa xag xan xar xas xat xna xns xrt xrx xsa xss xst xtr xts xtx xxx