a-a a-b a-z aaa aab aad aah aar aaz ab- aba abb abd abh abr abz ad- ada adb add adh adr adz aha ahb ahd ahh ahr ahz ar- ara arb ard arh arr arz az- aza azb azd azz baa bab bad bah bar baz bba bbb bbd bbh bbr bda bdb bdd bdh bdr bdz bha bhb bhd bhh bhr bra brb brd brh brr brz bza bzd bzh bzr bzz daa dab dad dah dar daz dba dbb dbd dbh dbr dbz dda ddb ddd ddh ddr ddz dh- dha dhb dhd dhh dhr dra drb drd drr drz dza dzb dzd dzr haa hab had hah har haz hba hbb hbd hbh hbr hbz hda hdb hdd hdh hdr hdz hha hhb hhd hhh hhr hhz hr- hra hrb hrd hrh hrr hrz hzd ra- raa rab rad rah rar raz rba rbb rbd rbh rbr rda rdb rdd rdh rdr rh- rha rhb rhd rhh rhr rra rrb rrd rrh rrr rza rzb zaa zab zad zah zar zaz zbb zbr zha zhr zrh zzr zzz