a-a a-b aaa aab aak aan aau aay ab- aba abb abk abn abu aby aka akb akk akn aku an- ana anb ank ann anu any au- aua aub auk aun ay- aya ayk ayn ayu b-u baa bab bak ban bau bay bba bbb bbk bbn bbu bby bka bkb bkk bkn bna bnb bnk bnn bnu bua bub buk bun buu buy by- bya byk byn byu ka- kaa kab kak kan kau kay kba kbb kbk kbn kbu kkb kkk kkn kku kky kn- kna knk knn knu kub kuk kun kuu kuy kya kyn kyu naa nab nak nan nau nay nba nbb nbk nbn nbu nka nkk nkn nku nky nna nnb nnk nnn nnu nua nub nuk nun nuu nuy nya nyk nyn nyu nyy ua- uaa uab uak uan uau uay uba ubb ubk ubn ubu uby uka ukb ukk ukn uku un- una unb unk unn unu uny uua uun uuu uyu yaa yab yak yan yau yay yby yka ykk ykn yna ynk ynn ynu yny yua yuk yun yuu yuy yyb yyu yyy