a-a aaa aag aao aap aar aas ag- aga agg ago agp agr ags aoa aog aoo aop aor aos ap- apa apg apo app apr aps ar- ara arg aro arp arr ars as- asa asg aso asp asr ass g-p gaa gag gao gap gar gas gga ggg ggo ggp ggr ggs goa gog goo gop gor gos gpa gpg gpo gpp gpr gps gra grg gro grp grr grs gsa gsg gso gsp gsr gss oaa oag oao oap oar oas oga ogg ogo ogp ogs oo- ooa oog ooo oop oor oos op- opa opg opo opp opr ops or- ora org oro orp orr ors os- osa osg oso osp osr oss p-p paa pag pao pap par pas pga pgg pgo pgp pgr pgs poa pog poo pop por pos ppa ppg ppo ppp ppr pps pra prg pro prp prr prs ps- psa psg pso psp psr pss ra- raa rag rao rap rar ras rga rgg rgo rgp rgr rgs roa rog roo rop ror ros rpa rpg rpo rpp rpr rps rra rrg rrp rrr rrs rsa rsg rso rsp rsr rss saa sag sao sap sar sas sga sgg sgo sgp sgr sgs soa sog soo sop sor sos spa spg spo spp spr sps sr- sra srg sro srp srr srs ss- ssa ssg sso ssp ssr sss