a-a a-b a-t a-z aaa aab aak aat aau aaz ab- aba abb abk abt abu abz aka akb akk aku at- ata atb att atu atz au- aua aub auk aut auz az- aza azb azt azu azz b-u baa bab bak bat bau baz bba bbb bbk bbt bbu bka bkb bkk bkt bta btb btk btt btu btz bua bub buk but buu buz bza bzu bzz k-t k-z ka- kaa kab kak kat kau kaz kba kbb kbk kbu kbz kkb kkk kkt kku kta ktb ktk ktt ktu kub kuk kut kuu taa tab tak tat tau taz tba tbb tbk tbt tbu tbz tka tkb tkk tkt tkz tta ttb ttk ttt ttu tua tub tuk tut tuu tuz tza tzu ua- uaa uab uak uat uau uaz uba ubb ubk ubt ubu uka ukb ukk uku ukz uta utb utk utt utu utz uua uut uuu uza uzb uzu zaa zab zak zat zaz zbb zbt zka zta zub zuk zut zuz zzt zzz