a-a a-z aaa aag aao aas aaz ag- aga agg ago ags agz aoa aog aoo aos as- asa asg aso ass asz az- aza azg azo azs azz gaa gag gao gas gaz gga ggg ggo ggs ggz goa gog goo gos goz gsa gsg gso gss gza gzo oaa oag oao oas oga ogg ogo ogs oo- ooa oog ooo oos os- osa osg oso oss oza ozo ozs ozz saa sag sao sas saz sga sgg sgo sgs soa sog soo sos soz ss- ssa ssg sso sss ssz sza z-g zaa zag zao zas zaz zgg zgs zo- zoa zog zoo zos zsa zsg zsz zzs zzz