a-a a-b a-i a-z aaa aab aae aag aai aak aaz ab- aba abb abe abg abi abk abz aea aeb aee aeg aei aek aez ag- aga agb age agg agi agk agz ai- aia aib aie aig aii aik aiz aka akb ake akg aki akk az- aza azb aze azg azi azz baa bab bae bag bai bak baz bba bbb bbe bbg bbi bbk be- bea beb bee beg bei bek bez bga bgb bge bgg bgi bgk bgz bi- bia bib bie big bii bik biz bka bkb bke bkg bkk bza bze bzz eaa eab eae eag eai eak eaz eba ebb ebe ebg ebi ebk eea eeb eee eeg eek ega egb ege egg egi eia eib eie eig eii eik eka ekb eke ekg eki eze ezz gaa gab gae gag gai gak gaz gba gbe gbg gbi gbk gbz ge- gea geb gee geg gei gek gez gga ggb ggg ggi ggz gia gib gie gig gii gik giz gka gkb gza ia- iaa iab iae iag iai iaz iba ibb ibe ibg ibi ibk ibz ie- iea iee ieg iei iek iga igb ige igg igi igk iia iib iie iii ika ikb ike iki ikk iza ize izi izz k-z ka- kaa kab kae kag kai kak kaz kba kbb kbe kbi kbk kbz ke- kea keb kee keg kei kek kez kga kgb kgi kia kib kie kig kii kik kiz kkb kke kki kkk z-g zaa zab zag zai zak zaz zbb zea zeb zee zek zez zgb zgg zgi zia zib zie zig zik ziz zka zzz