a-a a-b a-t aaa aab aag aaj aan aar aat ab- aba abb abg abj abn abr abt ag- aga agb agg agj agn agr agt aja ajb ajj ajn ajr ajt an- ana anb ang anj ann anr ant ar- ara arb arg arj arn arr art at- ata atb atg atn atr att baa bab bag baj ban bar bat bba bbb bbg bbn bbr bbt bga bgb bgg bgn bgr bgt bja bjg bjj bjn bjr bjt bna bnb bng bnj bnn bnr bnt bra brb brg brj brn brr brt bta btb btg btn btr btt gaa gab gag gaj gan gar gat gba gbg gbj gbn gbr gbt gga ggb ggg ggj ggn ggr ggt gja gjg gjr gjt gna gnb gnn gnr gnt gra grb grg grj grn grr grt gta gtb gtg gtn gtr gtt jaa jab jag jaj jan jar jat jba jbg jbj jbr jbt jga jgb jgn jgr jgt jja jjb jjg jjj jjr jna jng jnj jnn jnr jnt jra jrb jrg jrn jrr jrt jta jtb jtg jtn jtr jtt naa nab nag naj nan nar nat nba nbb nbg nbn nbr nbt nga ngb ngg ngj ngn ngt nja njn nna nnb nng nnn nnt nra nrb nrg nrj nrn nrr nrt nta ntb ntg ntn ntr ntt ra- raa rab rag raj ran rar rat rba rbb rbg rbn rbr rbt rga rgb rgg rgn rgr rgt rja rjg rjr rna rnb rng rnn rnr rnt rra rrb rrg rrn rrr rrt rta rtb rtg rtj rtn rtr rtt taa tab tag taj tan tar tat tba tbb tbg tbj tbn tbr tbt tga tgb tgg tgn tgr tgt tjr tna tnb tng tnn tnr tnt tra trb trg trn trr trt tta ttb ttg ttn ttr ttt