a-a a-b aaa aab aaj aan aar ab- aba abb abj abn abr aja ajb ajj ajn ajr an- ana anb anj ann anr ar- ara arb arj arn arr baa bab baj ban bar bba bbb bbn bbr bja bjj bjn bjr bna bnb bnj bnn bnr bra brb brj brn brr jaa jab jaj jan jar jba jbj jbr jja jjb jjj jjr jna jnj jnn jnr jra jrb jrn jrr naa nab naj nan nar nba nbb nbn nbr nja njn nna nnb nnn nra nrb nrj nrn nrr ra- raa rab raj ran rar rba rbb rbn rbr rja rjr rna rnb rnn rnr rra rrb rrn rrr