a-a a-b aaa aab aag aaj aar ab- aba abb abg abj abr ag- aga agb agg agj agr aja ajb ajj ajr ar- ara arb arg arj arr baa bab bag baj bar bba bbb bbg bbr bga bgb bgg bgr bja bjg bjj bjr bra brb brg brj brr gaa gab gag gaj gar gba gbg gbj gbr gga ggb ggg ggj ggr gja gjg gjr gra grb grg grj grr jaa jab jag jaj jar jba jbg jbj jbr jga jgb jgr jja jjb jjg jjj jjr jra jrb jrg jrr ra- raa rab rag raj rar rba rbb rbg rbr rga rgb rgg rgr rja rjg rjr rra rrb rrg rrr