a-a a-b a-z aaa aab aad aag aas aaz ab- aba abb abd abg abs abz ad- ada adb add adg ads adz ag- aga agb agd agg ags agz as- asa asb asd asg ass asz az- aza azb azd azg azs azz baa bab bad bag bas baz bba bbb bbd bbg bbs bda bdb bdd bdg bds bdz bga bgb bgd bgg bgs bgz bsa bsb bsd bsg bss bza bzd bzs bzz daa dab dad dag das daz dba dbb dbd dbg dbs dbz dda ddb ddd ddg dds ddz dga dgd dgg dgs dgz dsa dsb dsd dsg dss dsz dza dzb dzd dzs g-d gaa gab gad gag gas gaz gba gbd gbg gbs gbz gda gdb gdd gds gga ggb ggd ggg ggs ggz gsa gsb gsd gsg gss gza saa sab sad sag sas saz sba sbb sbd sbg sbs sda sdb sdd sdg sds sdz sga sgb sgd sgg sgs ss- ssa ssb ssd ssg sss ssz sza szd z-g zaa zab zad zag zas zaz zbb zbs zds zgb zgg zgs zsa zsg zsz zzs zzz