a-a a-b aaa aab aad aag aam ab- aba abb abd abg abm ad- ada adb add adg adm ag- aga agb agd agg agm ama amb amd amg amm baa bab bad bag bam bba bbb bbd bbg bbm bda bdb bdd bdg bdm bga bgb bgd bgg bgm bma bmb bmd bmg bmm daa dab dad dag dam dba dbb dbd dbg dbm dda ddb ddd ddg ddm dga dgd dgg dgm dma dmb dmd dmg dmm g-d gaa gab gad gag gam gba gbd gbg gbm gda gdb gdd gdm gga ggb ggd ggg ggm gma gmb gmd gmg gmm maa mab mad mag mam mba mbb mbd mbg mbm mda mdb mdd mdg mdm mga mgb mgd mgm mma mmb mmd mmg mmm