a-a a-b a-z aaa aab aam aan aau aaz ab- aba abb abm abn abu abz ama amb amm amn amu amz an- ana anb anm ann anu anz au- aua aub aum aun auz az- aza azb azm azn azu azz b-u baa bab bam ban bau baz bba bbb bbm bbn bbu bma bmb bmm bmn bmu bmz bna bnb bnn bnu bnz bua bub bum bun buu buz bza bzn bzu bzz maa mab mam man mau maz mba mbb mbm mbu mma mmb mmm mmn mmu mmz mna mnb mnm mnn mnu mnz mua mub mum mun muu mza mzb mzm mzn naa nab nam nan nau naz nba nbb nbm nbn nbu nma nmb nmm nmn nmu nmz nna nnb nnm nnn nnu nnz nua nub num nun nuu nzb nzz ua- uaa uab uam uan uau uaz uba ubb ubn ubu um- uma umb umm umn umu un- una unb unm unn unu uua uum uun uuu uza uzb uzu zaa zab zam zan zaz zbb zbm zma zmb zmm znn zub zum zun zuz zzz