a-a a-b a-t aaa aab aad aam aat aau ab- aba abb abd abm abt abu ad- ada adb add adm adt adu ama amb amd amm amt amu at- ata atb atd atm att atu au- aua aub aud aum aut b-u baa bab bad bam bat bau bba bbb bbd bbm bbt bbu bda bdb bdd bdm bdt bdu bma bmb bmd bmm bmt bmu bta btb btd btm btt btu bua bub bud bum but buu daa dab dad dam dat dau dba dbb dbd dbm dbt dbu dda ddb ddd ddm ddt ddu dma dmb dmd dmm dmt dmu dta dtb dtd dtm dtt dtu dua dub dud dum dut maa mab mad mam mat mau mba mbb mbd mbm mbt mbu mda mdb mdd mdm mdt mdu mma mmb mmd mmm mmt mmu mta mtb mtd mtm mtt mtu mua mub mud mum mut muu taa tab tad tam tat tau tba tbb tbd tbm tbt tbu tda tdb tdd tdm tdt tdu tma tmb tmd tmm tmt tmu tta ttb ttd ttm ttt ttu tua tub tud tum tut tuu ua- uaa uab uad uam uat uau uba ubb ubt ubu uda udb udd udm udt udu um- uma umb umd umm umt umu uta utb utd utm utt utu uua uum uut uuu