a-a a-t aaa aag aao aar aas aat ag- aga agg ago agr ags agt aoa aog aoo aor aos aot ar- ara arg aro arr ars art as- asa asg aso asr ass ast at- ata atg ato atr ats att gaa gag gao gar gas gat gga ggg ggo ggr ggs ggt goa gog goo gor gos got gra grg gro grr grs grt gsa gsg gso gsr gss gst gta gtg gto gtr gts gtt oaa oag oao oar oas oat oga ogg ogo ogs ogt oo- ooa oog ooo oor oos oot or- ora org oro orr ors ort os- osa osg oso osr oss ost ot- ota otg oto otr ots ott ra- raa rag rao rar ras rat rga rgg rgo rgr rgs rgt roa rog roo ror ros rot rra rrg rrr rrs rrt rsa rsg rso rsr rss rst rta rtg rto rtr rts rtt saa sag sao sar sas sat sga sgg sgo sgr sgs sgt soa sog soo sor sos sot sr- sra srg sro srr srs srt ss- ssa ssg sso ssr sss sst sta stg sto str sts stt taa tag tao tar tas tat tga tgg tgo tgr tgs tgt to- toa tog too tor tos tot tra trg tro trr trs trt tsa tsg tso tsr tss tst tta ttg tto ttr tts ttt