a-a a-b aaa aab aag aaj aak aan aar ab- aba abb abg abj abk abn abr ag- aga agb agg agj agk agn agr aja ajb ajj ajk ajn ajr aka akb akg akj akk akn akr an- ana anb ang anj ank ann anr ar- ara arb arg arj ark arn arr baa bab bag baj bak ban bar bba bbb bbg bbk bbn bbr bga bgb bgg bgk bgn bgr bja bjg bjj bjk bjn bjr bka bkb bkg bkk bkn bkr bna bnb bng bnj bnk bnn bnr bra brb brg brj brk brn brr gaa gab gag gaj gak gan gar gba gbg gbj gbk gbn gbr gga ggb ggg ggj ggn ggr gja gjg gjr gka gkb gkn gna gnb gnn gnr gra grb grg grj grk grn grr jaa jab jag jaj jak jan jar jba jbg jbj jbk jbr jga jgb jgn jgr jja jjb jjg jjj jjk jjr jka jkb jkk jkn jkr jna jng jnj jnn jnr jra jrb jrg jrk jrn jrr ka- kaa kab kag kaj kak kan kar kba kbb kbk kbn kbr kga kgb kjb kjr kkb kkk kkn kkr kn- kna kng knk knn knr kra krg krk krn krr naa nab nag naj nak nan nar nba nbb nbg nbk nbn nbr nga ngb ngg ngj ngk ngn nja njk njn nka nkj nkk nkn nkr nna nnb nng nnk nnn nra nrb nrg nrj nrk nrn nrr ra- raa rab rag raj rak ran rar rba rbb rbg rbk rbn rbr rga rgb rgg rgk rgn rgr rja rjg rjk rjr rkb rkg rkk rna rnb rng rnn rnr rra rrb rrg rrk rrn rrr