-th a-a a-b a-t aaa aab aag aah aan aar aat ab- aba abb abg abh abn abr abt ag- aga agb agg agh agn agr agt aha ahb ahg ahh ahn ahr aht an- ana anb ang anh ann anr ant ar- ara arb arg arh arn arr art at- ata atb atg ath atn atr att baa bab bag bah ban bar bat bba bbb bbg bbh bbn bbr bbt bga bgb bgg bgh bgn bgr bgt bha bhb bhg bhh bhr bht bna bnb bng bnn bnr bnt bra brb brg brh brn brr brt bta btb btg bth btn btr btt gaa gab gag gah gan gar gat gba gbg gbh gbn gbr gbt gga ggb ggg ggh ggn ggr ggt gha ghb ghg ghh ghn ghr ght gna gnb gnn gnr gnt gra grb grg grh grn grr grt gta gtb gtg gth gtn gtr gtt haa hab hag hah han har hat hba hbb hbg hbh hbn hbr hbt hga hgb hgg hgh hgn hgr hgt hha hhb hhg hhh hhn hhr hht hna hnb hng hnh hnn hnt hr- hra hrb hrg hrh hrn hrr hrt hta htb htg hth htn htr htt naa nab nag nah nan nar nat nba nbb nbg nbn nbr nbt nga ngb ngg ngh ngn ngt nha nhb nhg nhh nhn nhr nht nna nnb nng nnh nnn nnt nra nrb nrg nrn nrr nrt nta ntb ntg nth ntn ntr ntt ra- raa rab rag rah ran rar rat rba rbb rbg rbh rbn rbr rbt rga rgb rgg rgh rgn rgr rgt rh- rha rhb rhg rhh rhn rhr rht rna rnb rng rnh rnn rnr rnt rra rrb rrg rrh rrn rrr rrt rta rtb rtg rtn rtr rtt taa tab tag tah tan tar tat tba tbb tbg tbh tbn tbr tbt tga tgb tgg tgh tgn tgr tgt th- tha thb thg thh thn thr tht tna tnb tng tnh tnn tnr tnt tra trb trg trh trn trr trt tta ttb ttg tth ttn ttr ttt