a-a a-b aaa aab aag aah aaj ab- aba abb abg abh abj ag- aga agb agg agh agj aha ahb ahg ahh ahj aja ajb ajh ajj baa bab bag bah baj bba bbb bbg bbh bga bgb bgg bgh bha bhb bhg bhh bhj bja bjg bjj gaa gab gag gah gaj gba gbg gbh gbj gga ggb ggg ggh ggj gha ghb ghg ghh ghj gja gjg haa hab hag hah haj hba hbb hbg hbh hbj hga hgb hgg hgh hha hhb hhg hhh hhj hja jaa jab jag jah jaj jba jbg jbj jga jgb jgh jha jhj jja jjb jjg jjj