a-a a-t aaa aag aao aap aar aas aat ag- aga agg ago agp agr ags agt aoa aog aoo aop aor aos aot ap- apa apg apo app apr aps apt ar- ara arg aro arp arr ars art as- asa asg aso asp asr ass ast at- ata atg ato atp atr ats att g-p gaa gag gao gap gar gas gat gga ggg ggo ggp ggr ggs ggt goa gog goo gop gor gos got gpa gpg gpo gpp gpr gps gpt gra grg gro grp grr grs grt gsa gsg gso gsp gsr gss gst gta gtg gto gtp gtr gts gtt oaa oag oao oap oar oas oat oga ogg ogo ogp ogs ogt oo- ooa oog ooo oop oor oos oot op- opa opg opo opp opr ops opt or- ora org oro orp orr ors ort os- osa osg oso osp osr oss ost ot- ota otg oto otp otr ots ott p-p paa pag pao pap par pas pat pga pgg pgo pgp pgr pgs pgt poa pog poo pop por pos pot ppa ppg ppo ppp ppr pps ppt pra prg pro prp prr prs prt ps- psa psg pso psp psr pss pst pt- pta ptg pto ptp ptr pts ptt ra- raa rag rao rap rar ras rat rga rgg rgo rgp rgr rgs rgt roa rog roo rop ror ros rot rpa rpg rpo rpp rpr rps rpt rra rrg rrp rrr rrs rrt rsa rsg rso rsp rsr rss rst rta rtg rto rtp rtr rts rtt saa sag sao sap sar sas sat sga sgg sgo sgp sgr sgs sgt soa sog soo sop sor sos sot spa spg spo spp spr sps spt sr- sra srg sro srp srr srs srt ss- ssa ssg sso ssp ssr sss sst sta stg sto stp str sts stt taa tag tao tap tar tas tat tga tgg tgo tgp tgr tgs tgt to- toa tog too top tor tos tot tpa tpg tpo tpp tpr tps tpt tra trg tro trp trr trs trt tsa tsg tso tsp tsr tss tst tta ttg tto ttp ttr tts ttt