a-a aaa aad aaf aag aam aao ad- ada add adf adg adm ado af- afa afd aff afg afm afo ag- aga agd agf agg agm ago ama amd amf amg amm amo aoa aod aof aog aom aoo daa dad daf dag dam dao dda ddd ddf ddg ddm ddo dfa dfd dff dfg dfm dfo dga dgd dgf dgg dgm dma dmd dmf dmg dmm dmo doa dod dof dog dom doo faa fad faf fag fam fao fda fdd fdf fdg fdm fdo ffa ffd fff ffg ffm ffo fga fgd fgf fgg fgm fma fmd fmf fmg fmm fmo foa fof fog fom foo g-d gaa gad gaf gag gam gao gda gdd gdf gdm gdo gfa gfd gff gfm gfo gga ggd ggg ggm ggo gma gmd gmf gmg gmm gmo goa god gof gog gom goo m-f m-o maa mad maf mag mam mao mda mdd mdf mdg mdm mdo mfa mfd mff mfg mfm mfo mga mgd mgf mgm mgo mma mmd mmf mmg mmm mmo moa mod mof mog mom moo oaa oad oaf oag oam oao oda odd odf odg odm odo of- ofa ofd off ofg ofm ofo oga ogd ogf ogg ogo om- oma omd omf omg omm omo oo- ooa ood oof oog oom ooo