a-a a-b aaa aab aad aam aau ab- aba abb abd abm abu ad- ada adb add adm adu ama amb amd amm amu au- aua aub aud aum b-u baa bab bad bam bau bba bbb bbd bbm bbu bda bdb bdd bdm bdu bma bmb bmd bmm bmu bua bub bud bum buu daa dab dad dam dau dba dbb dbd dbm dbu dda ddb ddd ddm ddu dma dmb dmd dmm dmu dua dub dud dum maa mab mad mam mau mba mbb mbd mbm mbu mda mdb mdd mdm mdu mma mmb mmd mmm mmu mua mub mud mum muu ua- uaa uab uad uam uau uba ubb ubu uda udb udd udm udu um- uma umb umd umm umu uua uum uuu