a-a a-b aaa aab aag aah aao aap aar aas ab- aba abb abg abh abo abp abr abs ag- aga agb agg agh ago agp agr ags aha ahb ahg ahh aho ahp ahr ahs aoa aob aog aoh aoo aop aor aos ap- apa apb apg aph apo app apr aps ar- ara arb arg arh aro arp arr ars as- asa asb asg ash aso asp asr ass b-p baa bab bag bah bao bap bar bas bba bbb bbg bbh bbo bbp bbr bbs bga bgb bgg bgh bgo bgp bgr bgs bha bhb bhg bhh bho bhp bhr bhs boa bob bog boh boo bop bor bos bpa bpb bpg bph bpo bpp bpr bps bra brb brg brh bro brp brr brs bsa bsb bsg bsh bso bsp bsr bss g-p gaa gab gag gah gao gap gar gas gba gbg gbh gbo gbp gbr gbs gga ggb ggg ggh ggo ggp ggr ggs gha ghb ghg ghh gho ghp ghr ghs goa gob gog goh goo gop gor gos gpa gpb gpg gph gpo gpp gpr gps gra grb grg grh gro grp grr grs gsa gsb gsg gso gsp gsr gss haa hab hag hah hao hap har has hba hbb hbg hbh hbo hbp hbr hbs hga hgb hgg hgh hgo hgp hgr hgs hha hhb hhg hhh hho hhp hhr hhs hoa hob hog hoh hoo hop hor hos hpa hpb hpg hph hpo hpp hpr hps hr- hra hrb hrg hrh hro hrp hrr hrs hsa hsb hsg hsh hsp hsr hss oaa oab oag oah oao oap oar oas ob- oba obb obg obh obo obp obr obs oga ogg ogh ogo ogp ogs oha ohg ohh oho ohp ohr ohs oo- ooa oob oog ooh ooo oop oor oos op- opa opb opg oph opo opp opr ops or- ora orb org orh oro orp orr ors os- osa osb osg osh oso osp osr oss p-p paa pab pag pah pao pap par pas pba pbb pbg pbo pbp pbr pbs pga pgb pgg pgh pgo pgp pgr pgs pha phb phg pho php phr phs poa pob pog poh poo pop por pos ppa ppb ppg pph ppo ppp ppr pps pra prb prg prh pro prp prr prs ps- psa psb psg psh pso psp psr pss ra- raa rab rag rah rao rap rar ras rba rbb rbg rbh rbo rbp rbr rbs rga rgb rgg rgh rgo rgp rgr rgs rh- rha rhb rhg rhh rho rhp rhr rhs roa rob rog roh roo rop ror ros rpa rpb rpg rph rpo rpp rpr rps rra rrb rrg rrh rrp rrr rrs rsa rsb rsg rsh rso rsp rsr rss saa sab sag sah sao sap sar sas sba sbb sbg sbh sbo sbp sbr sbs sga sgb sgg sgh sgo sgp sgr sgs sh- sha shb shg shh sho shp shr shs soa sob sog soh soo sop sor sos spa spb spg sph spo spp spr sps sr- sra srb srg srh sro srp srr srs ss- ssa ssb ssg ssh sso ssp ssr sss