bbbb bbdd bbdo bd-r bobb bobo bodb bodo boko boob bood book boor booz bor- bord bork boro borr borz bozo brdo brkb brob brod brok broo bror broz brrr bzrk bzzz d-bo dddd dobb dod- dodd dodo doko doob dood dook door dord dork doro dorr dozo drob drod droz dzbb dzok dzor dzrr kbbb kbbd kbbk kbbo kbbr kbbz kbdb kbdo kbdr kbdz kbkb kbkk kbko kbkr kbkz kbob kbod kbok kboo kboz kbrb kbrd kbrk kbro kbrz kbzd kbzo kbzz kdbb kdbr kddb kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdok kdrb kdro kdzr kdzz kkbb kkbd kkbo kkbr kkbz kkdd kkdo kkdz kkkk kkob kkoo kkor kkoz kkrb kkrk kkro kkrr kkrz kkzz kobb kobk kobo kobr kodk kodo kodz kokb kokk koko kokr kokz koob kook kooo koor kooz korb kord kork koro korr kozb kozk kozo kozr krbb krbd krbk krbr krbz krdd krdo krdr krdz krkd krkk krko krkr krkz krob krod krok kroo kror kroz krrb krrk krro krrr krrz krzk krzr krzz kzbb kzbd kzbk kzbr kzbz kzdr kzkr kzkz kzoo kzor kzoz kzrb kzrd kzrk kzro kzrr kzrz kzzb kzzd kzzk kzzo kzzr kzzz obbo obkb obok obor obro odbo oddd odoo odor okko okok okor okro oooo oord orbb orbo ordo orko oro- orok oror oroz orro orzk orzo ozd rbbb rbbr rob- robb robo rodd rodo rokk roko rokr roob rood rook roor rooz rork roro rozz rrrr z-ro zobo zodd zoo- zook zorb zord zork zoro zozo zzzz