a-a a-b a-z aaa aab aad aam aao aaz ab- aba abb abd abm abo abz ad- ada adb add adm ado adz ama amb amd amm amo amz aoa aob aod aom aoo az- aza azb azd azm azo azz baa bab bad bam bao baz bba bbb bbd bbm bbo bda bdb bdd bdm bdo bdz bma bmb bmd bmm bmo bmz boa bob bod bom boo boz bza bzd bzo bzz daa dab dad dam dao daz dba dbb dbd dbm dbo dbz dda ddb ddd ddm ddo ddz dma dmb dmd dmm dmo dmz doa dob dod dom doo doz dza dzb dzd dzo m-o maa mab mad mam mao maz mba mbb mbd mbm mbo mda mdb mdd mdm mdo mdz mma mmb mmd mmm mmo mmz moa mob mod mom moo moz mza mzb mzm oaa oab oad oam oao ob- oba obb obd obm obo oda odb odd odm odo om- oma omb omd omm omo omz oo- ooa oob ood oom ooo oza ozm ozo ozz zaa zab zad zam zao zaz zbb zbm zdm zma zmb zmd zmm zo- zoa zob zod zom zoo zzz