a-a a-b a-z aaa aab aag aah aao aaz ab- aba abb abg abh abo abz ag- aga agb agg agh ago agz aha ahb ahg ahh aho ahz aoa aob aog aoh aoo az- aza azb azg azo azz baa bab bag bah bao baz bba bbb bbg bbh bbo bga bgb bgg bgh bgo bgz bha bhb bhg bhh bho boa bob bog boh boo boz bza bzh bzo bzz gaa gab gag gah gao gaz gba gbg gbh gbo gbz gga ggb ggg ggh ggo ggz gha ghb ghg ghh gho ghz goa gob gog goh goo goz gza gzo haa hab hag hah hao haz hba hbb hbg hbh hbo hbz hga hgb hgg hgh hgo hha hhb hhg hhh hho hhz hoa hob hog hoh hoo hzo oaa oab oag oah oao ob- oba obb obg obh obo oga ogg ogh ogo oha ohg ohh oho oo- ooa oob oog ooh ooo oza ozo ozz z-g zaa zab zag zah zao zaz zbb zgb zgg zha zho zo- zoa zob zog zoo zzz