a-a a-b aaa aab aad aag aam aar ab- aba abb abd abg abm abr ad- ada adb add adg adm adr ag- aga agb agd agg agm agr ama amb amd amg amm amr ar- ara arb ard arg arm arr baa bab bad bag bam bar bba bbb bbd bbg bbm bbr bda bdb bdd bdg bdm bdr bga bgb bgd bgg bgm bgr bma bmb bmd bmg bmm bmr bra brb brd brg brm brr daa dab dad dag dam dar dba dbb dbd dbg dbm dbr dda ddb ddd ddg ddm ddr dga dgd dgg dgm dgr dma dmb dmd dmg dmm dmr dra drb drd drg drm drr g-d gaa gab gad gag gam gar gba gbd gbg gbm gbr gda gdb gdd gdm gdr gga ggb ggd ggg ggm ggr gma gmb gmd gmg gmm gmr gra grb grd grg grm grr m-r maa mab mad mag mam mar mba mbb mbd mbg mbm mbr mda mdb mdd mdg mdm mdr mga mgb mgd mgm mgr mma mmb mmd mmg mmm mmr mra mrb mrd mrg mrm mrr ra- raa rab rad rag ram rar rba rbb rbd rbg rbm rbr rda rdb rdd rdg rdm rdr rga rgb rgd rgg rgr rma rmb rmd rmg rmm rmr rra rrb rrd rrg rrm rrr