a-a a-b aaa aab aag aak aan aau ab- aba abb abg abk abn abu ag- aga agb agg agk agn agu aka akb akg akk akn aku an- ana anb ang ank ann anu au- aua aub aug auk aun b-u baa bab bag bak ban bau bba bbb bbg bbk bbn bbu bga bgb bgg bgk bgn bgu bka bkb bkg bkk bkn bna bnb bng bnk bnn bnu bua bub bug buk bun buu gaa gab gag gak gan gau gba gbg gbk gbn gbu gga ggb ggg ggn ggu gka gkb gkn gna gnb gnn gnu gu- gua gub gug guk gun guu ka- kaa kab kag kak kan kau kba kbb kbk kbn kbu kga kgb kgu kkb kkk kkn kku kn- kna kng knk knn knu kub kug kuk kun kuu naa nab nag nak nan nau nba nbb nbg nbk nbn nbu nga ngb ngg ngk ngn ngu nka nkk nkn nku nna nnb nng nnk nnn nnu nua nub nug nuk nun nuu ua- uaa uab uag uak uan uau uba ubb ubg ubk ubn ubu uga ugb ugg ugk ugn ugu uka ukb ukk ukn uku un- una unb ung unk unn unu uua uug uun uuu