a-a a-b aaa aab aak aam aan aay ab- aba abb abk abm abn aby aka akb akk akm akn ama amb amk amm amn amy an- ana anb ank anm ann any ay- aya ayk ayn baa bab bak bam ban bay bba bbb bbk bbm bbn bby bka bkb bkk bkm bkn bma bmb bmk bmm bmn bna bnb bnk bnn by- bya byk bym byn ka- kaa kab kak kam kan kay kba kbb kbk kbm kbn kkb kkk kkm kkn kky kma kmb kmk kmm kn- kna knk knm knn kya kym kyn maa mab mak mam man may mba mbb mbk mbm mka mkb mkk mkm mkn mky mma mmb mmk mmm mmn mna mnb mnk mnm mnn my- mya myb myk mym myn naa nab nak nam nan nay nba nbb nbk nbm nbn nka nkk nkm nkn nky nma nmb nmk nmm nmn nna nnb nnk nnm nnn nya nyk nym nyn nyy yaa yab yak yam yan yay ybm yby yka ykk ykm ykn yma ymm yna ynk ynn yny yyb yyy