a-a a-b a-z aaa aab aad aah aao aau aaz ab- aba abb abd abh abo abu abz ad- ada adb add adh ado adu adz aha ahb ahd ahh aho ahu ahz aoa aob aod aoh aoo aou au- aua aub aud auh auo auz az- aza azb azd azo azu azz b-u baa bab bad bah bao bau baz bba bbb bbd bbh bbo bbu bda bdb bdd bdh bdo bdu bdz bha bhb bhd bhh bho bhu boa bob bod boh boo bou boz bua bub bud buh buo buu buz bza bzd bzh bzo bzu bzz daa dab dad dah dao dau daz dba dbb dbd dbh dbo dbu dbz dda ddb ddd ddh ddo ddu ddz dh- dha dhb dhd dhh dho dhu doa dob dod doh doo dou doz dua dub dud duh duo duz dza dzb dzd dzo dzu haa hab had hah hao hau haz hba hbb hbd hbh hbo hbu hbz hda hdb hdd hdh hdo hdu hdz hha hhb hhd hhh hho hhu hhz hoa hob hod hoh hoo hou hua hub hud huh huo huu huz hzd hzo oaa oab oad oah oao oau ob- oba obb obd obh obo obu oda odb odd odh odo odu oha ohd ohh oho ohu oo- ooa oob ood ooh ooo ou- oua oud ouh ouo oza ozo ozu ozz ua- uaa uab uad uah uao uau uaz uba ubb ubh ubo ubu uda udb udd udo udu uha uhb uhd uhh uho uhu uoa uob uod uoo uua uuu uza uzb uzh uzo uzu zaa zab zad zah zao zaz zbb zha zho zhu zo- zoa zob zod zoo zou zub zud zuz zzz