a-a a-b a-z aaa aab aak aam aan aaz ab- aba abb abk abm abn abz aka akb akk akm akn ama amb amk amm amn amz an- ana anb ank anm ann anz az- aza azb azm azn azz baa bab bak bam ban baz bba bbb bbk bbm bbn bka bkb bkk bkm bkn bma bmb bmk bmm bmn bmz bna bnb bnk bnn bnz bza bzn bzz k-z ka- kaa kab kak kam kan kaz kba kbb kbk kbm kbn kbz kkb kkk kkm kkn kma kmb kmk kmm kmz kn- kna knk knm knn maa mab mak mam man maz mba mbb mbk mbm mka mkb mkk mkm mkn mkz mma mmb mmk mmm mmn mmz mna mnb mnk mnm mnn mnz mza mzb mzm mzn naa nab nak nam nan naz nba nbb nbk nbm nbn nka nkk nkm nkn nma nmb nmk nmm nmn nmz nna nnb nnk nnm nnn nnz nzb nzz zaa zab zak zam zan zaz zbb zbm zka zma zmb zmk zmm znn zzz