bbbb bbin bibb bibi bibo biin bin- bini binn bino bint binu bio- bioi bion biot biou bito bitt bitu bnib bnin bobb bobi bobo bobu boi- boii boin boit boiu boni bonn bono bont bonu boob boon boot botb boti botn boto bott boun bout btob bttb bubb bubi bubo bubu buin buit buiu bunb buni bunn buno bunt bunu buon but- buti buto butt i-no ibon ibot ibtb iiii iiio iiit iino iioi iioo iitt inbo init inni inno innu ino- inoi inon inot inou inti intn into intu inui inun iobi ioii ioio ioit ioni ionn iono iooi iooo ioto ioun itin itno itoi iton itoo itou itto iuiu iuno n-ii nbbo nbti nibi nibo niit niiu nini nino nion nioo niou nitb niti nito nnit nnnn nnot nntn nobi nobo nobu noib noin noio noit non- noni nonn nono nont nonu noo- noob noon nooo noot not- noti noto nott noun nout ntnu ntto ntui nubi nuin nuit nunn nuno nunt nuon nutt nutu obbo obin obit oboi obon obot oiii oint oion oiti onit onni onno onon ont- onti onto onut oobi oont oooo ootb otin otit oto- oton otoo otti otto ottu ouii ouin ouit oun- out- outb outi outo ouu- tbit tibi tibu tiit tiiu tini tinn tino tint tinu tion tiou titi tito titt titu tnut tobi tobo tobt tobu toit tonb toni tonn tono tonu toon toot toti toto tott toui toun tout ttbb tton tttt tubb tubo tubu tuin tuit tuiu tunb tuni tunn tuno tunu tuti tuto tutt tutu tuuo ubbi ubbo ubii ubit ubon uint uni- unii unin unio unit unni unno unon untb unto unut utin utti utto uttu uuni uuno uuuu