a-a a-b a-i a-t a-z aaa aab aae aai aak aat aaz ab- aba abb abe abi abk abt abz aea aeb aee aei aek aet aez ai- aia aib aie aii aik ait aiz aka akb ake aki akk at- ata atb ate ati att atz az- aza azb aze azi azt azz baa bab bae bai bak bat baz bba bbb bbe bbi bbk bbt be- bea beb bee bei bek bet bez bi- bia bib bie bii bik bit biz bka bkb bke bkk bkt bta btb bte bti btk btt btz bza bze bzz eaa eab eae eai eak eat eaz eba ebb ebe ebi ebk ebt eea eeb eee eek eet eia eib eie eii eik eit eka ekb eke eki ekt eta etb ete eti etk ett etz eze ezz ia- iaa iab iae iai iat iaz iba ibb ibe ibi ibk ibt ibz ie- iea iee iei iek iet iia iib iie iii iit ika ikb ike iki ikk ikt ita itb ite iti itk itt itz iza ize izi izz k-t k-z ka- kaa kab kae kai kak kat kaz kba kbb kbe kbi kbk kbz ke- kea keb kee kei kek ket kez kia kib kie kii kik kit kiz kkb kke kki kkk kkt kta ktb kte ktk ktt taa tab tae tai tak tat taz tba tbb tbe tbi tbk tbt tbz te- tea teb tee tei tek tet tez tia tib tie tii tik tit tiz tka tkb tke tkk tkt tkz tta ttb tte tti ttk ttt tza tze zaa zab zai zak zat zaz zbb zbt zea zeb zee zek zet zez zia zib zie zik zit ziz zka zta zte zzt zzz