a-a a-b a-z aaa aab aah aan aau aaz ab- aba abb abh abn abu abz aha ahb ahh ahn ahu ahz an- ana anb anh ann anu anz au- aua aub auh aun auz az- aza azb azn azu azz b-u baa bab bah ban bau baz bba bbb bbh bbn bbu bha bhb bhh bhu bna bnb bnn bnu bnz bua bub buh bun buu buz bza bzh bzn bzu bzz haa hab hah han hau haz hba hbb hbh hbn hbu hbz hha hhb hhh hhn hhu hhz hna hnb hnh hnn hnu hnz hua hub huh hun huu huz naa nab nah nan nau naz nba nbb nbn nbu nha nhb nhh nhn nhu nhz nna nnb nnh nnn nnu nnz nua nub nuh nun nuu nzb nzz ua- uaa uab uah uan uau uaz uba ubb ubh ubn ubu uha uhb uhh uhu un- una unb unh unn unu uua uun uuu uza uzb uzh uzu zaa zab zah zan zaz zbb zha zhu znn zub zun zuz zzz