a-a a-b aaa aab aad aam aao aau ab- aba abb abd abm abo abu ad- ada adb add adm ado adu ama amb amd amm amo amu aoa aob aod aom aoo aou au- aua aub aud aum auo b-u baa bab bad bam bao bau bba bbb bbd bbm bbo bbu bda bdb bdd bdm bdo bdu bma bmb bmd bmm bmo bmu boa bob bod bom boo bou bua bub bud bum buo buu daa dab dad dam dao dau dba dbb dbd dbm dbo dbu dda ddb ddd ddm ddo ddu dma dmb dmd dmm dmo dmu doa dob dod dom doo dou dua dub dud dum duo m-o maa mab mad mam mao mau mba mbb mbd mbm mbo mbu mda mdb mdd mdm mdo mdu mma mmb mmd mmm mmo mmu moa mob mod mom moo mou mua mub mud mum muu oaa oab oad oam oao oau ob- oba obb obd obm obo obu oda odb odd odm odo odu om- oma omb omd omm omo omu oo- ooa oob ood oom ooo ou- oua oud oum ouo ua- uaa uab uad uam uao uau uba ubb ubo ubu uda udb udd udm udo udu um- uma umb umd umm umo umu uoa uob uod uom uoo uua uum uuu