a-a a-b a-z aaa aab aae aag aah aaz ab- aba abb abe abg abh abz aea aeb aee aeg aeh aez ag- aga agb age agg agh agz aha ahb ahe ahg ahh ahz az- aza azb aze azg azz baa bab bae bag bah baz bba bbb bbe bbg bbh be- bea beb bee beg beh bez bga bgb bge bgg bgh bgz bha bhb bhe bhg bhh bza bze bzh bzz eaa eab eae eag eah eaz eba ebb ebe ebg ebh eea eeb eee eeg ega egb ege egg egh eha ehb ehe ehg ehh eze ezh ezz gaa gab gae gag gah gaz gba gbe gbg gbh gbz ge- gea geb gee geg geh gez gga ggb ggg ggh ggz gha ghb ghe ghg ghh ghz gza haa hab hae hag hah haz hba hbb hbe hbg hbh hbz he- hea heb hee heg heh hez hga hgb hge hgg hgh hha hhb hhe hhg hhh hhz hze z-g zaa zab zag zah zaz zbb zea zeb zee zeh zez zgb zgg zha zhe zzz