-th a-a a-b a-t aaa aab aag aah aar aas aat ab- aba abb abg abh abr abs abt ag- aga agb agg agh agr ags agt aha ahb ahg ahh ahr ahs aht ar- ara arb arg arh arr ars art as- asa asb asg ash asr ass ast at- ata atb atg ath atr ats att baa bab bag bah bar bas bat bba bbb bbg bbh bbr bbs bbt bga bgb bgg bgh bgr bgs bgt bha bhb bhg bhh bhr bhs bht bra brb brg brh brr brs brt bsa bsb bsg bsh bsr bss bst bta btb btg bth btr bts btt gaa gab gag gah gar gas gat gba gbg gbh gbr gbs gbt gga ggb ggg ggh ggr ggs ggt gha ghb ghg ghh ghr ghs ght gra grb grg grh grr grs grt gsa gsb gsg gsr gss gst gta gtb gtg gth gtr gts gtt haa hab hag hah har has hat hba hbb hbg hbh hbr hbs hbt hga hgb hgg hgh hgr hgs hgt hha hhb hhg hhh hhr hhs hht hr- hra hrb hrg hrh hrr hrs hrt hsa hsb hsg hsh hsr hss hst hta htb htg hth htr hts htt ra- raa rab rag rah rar ras rat rba rbb rbg rbh rbr rbs rbt rga rgb rgg rgh rgr rgs rgt rh- rha rhb rhg rhh rhr rhs rht rra rrb rrg rrh rrr rrs rrt rsa rsb rsg rsh rsr rss rst rta rtb rtg rtr rts rtt saa sab sag sah sar sas sat sba sbb sbg sbh sbr sbs sbt sga sgb sgg sgh sgr sgs sgt sh- sha shb shg shh shr shs sht sr- sra srb srg srh srr srs srt ss- ssa ssb ssg ssh ssr sss sst sta stb stg sth str sts stt taa tab tag tah tar tas tat tba tbb tbg tbh tbr tbs tbt tga tgb tgg tgh tgr tgs tgt th- tha thb thg thh thr ths tht tra trb trg trh trr trs trt tsa tsb tsg tsh tsr tss tst tta ttb ttg tth ttr tts ttt