a-a a-b a-z aaa aab aah aar aas aaz ab- aba abb abh abr abs abz aha ahb ahh ahr ahs ahz ar- ara arb arh arr ars arz as- asa asb ash asr ass asz az- aza azb azs azz baa bab bah bar bas baz bba bbb bbh bbr bbs bha bhb bhh bhr bhs bra brb brh brr brs brz bsa bsb bsh bsr bss bza bzh bzr bzs bzz haa hab hah har has haz hba hbb hbh hbr hbs hbz hha hhb hhh hhr hhs hhz hr- hra hrb hrh hrr hrs hrz hsa hsb hsh hsr hss hsz hzs ra- raa rab rah rar ras raz rba rbb rbh rbr rbs rh- rha rhb rhh rhr rhs rra rrb rrh rrr rrs rsa rsb rsh rsr rss rza rzb saa sab sah sar sas saz sba sbb sbh sbr sbs sh- sha shb shh shr shs sr- sra srb srh srr srs ss- ssa ssb ssh ssr sss ssz sza szr zaa zab zah zar zas zaz zbb zbr zbs zha zhr zhs zrh zrs zsa zsh zsz zzr zzs zzz