a-a a-b aaa aab aag aah aan aar aas ab- aba abb abg abh abn abr abs ag- aga agb agg agh agn agr ags aha ahb ahg ahh ahn ahr ahs an- ana anb ang anh ann anr ans ar- ara arb arg arh arn arr ars as- asa asb asg ash asn asr ass baa bab bag bah ban bar bas bba bbb bbg bbh bbn bbr bbs bga bgb bgg bgh bgn bgr bgs bha bhb bhg bhh bhr bhs bna bnb bng bnn bnr bns bra brb brg brh brn brr brs bsa bsb bsg bsh bsn bsr bss gaa gab gag gah gan gar gas gba gbg gbh gbn gbr gbs gga ggb ggg ggh ggn ggr ggs gha ghb ghg ghh ghn ghr ghs gna gnb gnn gnr gns gra grb grg grh grn grr grs gsa gsb gsg gsn gsr gss haa hab hag hah han har has hba hbb hbg hbh hbn hbr hbs hga hgb hgg hgh hgn hgr hgs hha hhb hhg hhh hhn hhr hhs hna hnb hng hnh hnn hns hr- hra hrb hrg hrh hrn hrr hrs hsa hsb hsg hsh hsn hsr hss naa nab nag nah nan nar nas nba nbb nbg nbn nbr nbs nga ngb ngg ngh ngn ngs nha nhb nhg nhh nhn nhr nhs nna nnb nng nnh nnn nns nra nrb nrg nrn nrr nrs nsa nsb nsg nsh nsn nsr nss ra- raa rab rag rah ran rar ras rba rbb rbg rbh rbn rbr rbs rga rgb rgg rgh rgn rgr rgs rh- rha rhb rhg rhh rhn rhr rhs rna rnb rng rnh rnn rnr rns rra rrb rrg rrh rrn rrr rrs rsa rsb rsg rsh rsn rsr rss saa sab sag sah san sar sas sba sbb sbg sbh sbn sbr sbs sga sgb sgg sgh sgn sgr sgs sh- sha shb shg shh shn shr shs sna snb sng snn snr sns sr- sra srb srg srh srn srr srs ss- ssa ssb ssg ssh ssn ssr sss