a-a a-t aaa aag aar aas aat aau aax ag- aga agg agr ags agt agu agx ar- ara arg arr ars art aru arx as- asa asg asr ass ast asu asx at- ata atg atr ats att atu atx au- aua aug aur aus aut aux ax- axa axr axs axt axx gaa gag gar gas gat gau gga ggg ggr ggs ggt ggu gra grg grr grs grt gru grx gsa gsg gsr gss gst gsu gsx gta gtg gtr gts gtt gtu gtx gu- gua gug gur gus gut guu gxa gxs gxt ra- raa rag rar ras rat rau rax rga rgg rgr rgs rgt rgx rra rrg rrr rrs rrt rru rsa rsg rsr rss rst rsu rsx rta rtg rtr rts rtt rtu rtx rua rug rur rus rut ruu rux rxr rxs saa sag sar sas sat sau sax sga sgg sgr sgs sgt sgu sgx sr- sra srg srr srs srt srx ss- ssa ssg ssr sss sst ssu ssx sta stg str sts stt stu stx sua sug sur sus sut suu sux sxs sxt sxu t-x taa tag tar tas tat tau tax tga tgg tgr tgs tgt tgu tra trg trr trs trt tru trx tsa tsg tsr tss tst tsu tsx tta ttg ttr tts ttt ttu ttx tua tug tur tus tut tuu tux txs txt txu ua- uaa uag uar uas uat uau uga ugg ugr ugs ugt ugu ugx ur- ura urg urr urs urt uru urx usa usg usr uss ust usu usx uta utr uts utt utu utx uua uug uur uus uut uuu uxr uxt uxu xaa xag xar xas xat xau xrt xrx xsa xss xst xtr xts xtx xus xxx