a-a a-b a-z aaa aab aad aah aar aau aaz ab- aba abb abd abh abr abu abz ad- ada adb add adh adr adu adz aha ahb ahd ahh ahr ahu ahz ar- ara arb ard arh arr aru arz au- aua aub aud auh aur auz az- aza azb azd azu azz b-u baa bab bad bah bar bau baz bba bbb bbd bbh bbr bbu bda bdb bdd bdh bdr bdu bdz bha bhb bhd bhh bhr bhu bra brb brd brh brr bru brz bua bub bud buh bur buu buz bza bzd bzh bzr bzu bzz daa dab dad dah dar dau daz dba dbb dbd dbh dbr dbu dbz dda ddb ddd ddh ddr ddu ddz dh- dha dhb dhd dhh dhr dhu dra drb drd drr dru drz dua dub dud duh dur duz dza dzb dzd dzr dzu haa hab had hah har hau haz hba hbb hbd hbh hbr hbu hbz hda hdb hdd hdh hdr hdu hdz hha hhb hhd hhh hhr hhu hhz hr- hra hrb hrd hrh hrr hru hrz hua hub hud huh hur huu huz hzd ra- raa rab rad rah rar rau raz rba rbb rbd rbh rbr rbu rda rdb rdd rdh rdr rdu rh- rha rhb rhd rhh rhr rhu rra rrb rrd rrh rrr rru rua rub rud ruh rur ruu ruz rza rzb ua- uaa uab uad uah uar uau uaz uba ubb ubh ubr ubu uda udb udd udr udu uha uhb uhd uhh uhr uhu ur- ura urb urd urr uru urz uua uur uuu uza uzb uzh uzu zaa zab zad zah zar zaz zbb zbr zha zhr zhu zrh zub zud zur zuz zzr zzz