a-a a-b aaa aab aad aak aam aao aau ab- aba abb abd abk abm abo abu ad- ada adb add adk adm ado adu aka akb akd akk akm ako aku ama amb amd amk amm amo amu aoa aob aod aok aom aoo aou au- aua aub aud auk aum auo b-u baa bab bad bak bam bao bau bba bbb bbd bbk bbm bbo bbu bda bdb bdd bdk bdm bdo bdu bka bkb bkk bkm bko bma bmb bmd bmk bmm bmo bmu boa bob bod bok bom boo bou bua bub bud buk bum buo buu daa dab dad dak dam dao dau dba dbb dbd dbk dbm dbo dbu dda ddb ddd ddk ddm ddo ddu dka dkb dkk dkm dko dku dma dmb dmd dmk dmm dmo dmu doa dob dod dok dom doo dou dua dub dud duk dum duo ka- kaa kab kad kak kam kao kau kba kbb kbd kbk kbm kbo kbu kda kdb kdk kdm kdo kdu kkb kkk kkm kku kma kmb kmd kmk kmm kmo kmu koa kob kod kok kom koo kou kub kud kuk kum kuu m-o maa mab mad mak mam mao mau mba mbb mbd mbk mbm mbo mbu mda mdb mdd mdk mdm mdo mdu mka mkb mkd mkk mkm mko mku mma mmb mmd mmk mmm mmo mmu moa mob mod mok mom moo mou mua mub mud muk mum muu oaa oab oad oak oam oao oau ob- oba obb obd obk obm obo obu oda odb odd odm odo odu oka okb okd okk oko oku om- oma omb omd omm omo omu oo- ooa oob ood ook oom ooo ou- oua oud ouk oum ouo ua- uaa uab uad uak uam uao uau uba ubb ubk ubo ubu uda udb udd udk udm udo udu uka ukb ukk uku um- uma umb umd umm umo umu uoa uob uod uok uom uoo uua uum uuu