a-a a-b aaa aab aad aag aam aao ab- aba abb abd abg abm abo ad- ada adb add adg adm ado ag- aga agb agd agg agm ago ama amb amd amg amm amo aoa aob aod aog aom aoo baa bab bad bag bam bao bba bbb bbd bbg bbm bbo bda bdb bdd bdg bdm bdo bga bgb bgd bgg bgm bgo bma bmb bmd bmg bmm bmo boa bob bod bog bom boo daa dab dad dag dam dao dba dbb dbd dbg dbm dbo dda ddb ddd ddg ddm ddo dga dgd dgg dgm dma dmb dmd dmg dmm dmo doa dob dod dog dom doo g-d gaa gab gad gag gam gao gba gbd gbg gbm gbo gda gdb gdd gdm gdo gga ggb ggd ggg ggm ggo gma gmb gmd gmg gmm gmo goa gob god gog gom goo m-o maa mab mad mag mam mao mba mbb mbd mbg mbm mbo mda mdb mdd mdg mdm mdo mga mgb mgd mgm mgo mma mmb mmd mmg mmm mmo moa mob mod mog mom moo oaa oab oad oag oam oao ob- oba obb obd obg obm obo oda odb odd odg odm odo oga ogd ogg ogo om- oma omb omd omg omm omo oo- ooa oob ood oog oom ooo