a-a a-b aaa aab aak aam aan aau ab- aba abb abk abm abn abu aka akb akk akm akn aku ama amb amk amm amn amu an- ana anb ank anm ann anu au- aua aub auk aum aun b-u baa bab bak bam ban bau bba bbb bbk bbm bbn bbu bka bkb bkk bkm bkn bma bmb bmk bmm bmn bmu bna bnb bnk bnn bnu bua bub buk bum bun buu ka- kaa kab kak kam kan kau kba kbb kbk kbm kbn kbu kkb kkk kkm kkn kku kma kmb kmk kmm kmu kn- kna knk knm knn knu kub kuk kum kun kuu maa mab mak mam man mau mba mbb mbk mbm mbu mka mkb mkk mkm mkn mku mma mmb mmk mmm mmn mmu mna mnb mnk mnm mnn mnu mua mub muk mum mun muu naa nab nak nam nan nau nba nbb nbk nbm nbn nbu nka nkk nkm nkn nku nma nmb nmk nmm nmn nmu nna nnb nnk nnm nnn nnu nua nub nuk num nun nuu ua- uaa uab uak uam uan uau uba ubb ubk ubn ubu uka ukb ukk ukn uku um- uma umb umm umn umu un- una unb unk unm unn unu uua uum uun uuu