bbbb bbfn bbin bftt bibb bibi bibo biff bifi biin bin- bini binn bino bint bio- bioi bion biot bito bitt bnib bnin bobb bobi bobo boff boi- boii boin boit boni bonn bono bont boob boof boon boot botb boti botn boto bott btob bttb ffff ffii fftf fiff fifi fifo fift fiii fini finn fino fint fion fiti fitt fntb fobt fofo foin fono font foof foon foot foti foto fott ftii i-no ibfi ibon ibot ibtb ifbb ifit ifni ifno iftn ifto iiii iiio iiit iino iioi iioo iitt inbo infi info init inni inno ino- inoi inon inot inti intn into iobi ioii ioio ioit ioni ionn iono ioof iooi iooo iotf ioto itif itin itno itof itoi iton itoo ittf itto n-ii nbbo nbti nfff nfib nfon nfto nibi nibo niff nift niit nini nino nion nioo nitb nitf niti nito nnit nnnn nnot nntn nobi nobo nofi noib noif noin noio noit non- noni nonn nono nont noo- noob noon nooo noot not- noti noto nott ntof ntto obbo obin obit oboi obon obot off- offo ofit ofno oiii oint oion oiti onit onni onno onon ont- onti onto oobi ooff oont oooo ootb otif otin otit oto- otof oton otoo otti otto tbit tbnf tfin tfot tibi tiff tifo tift tiit tini tinn tino tint tion titi tito titt tobi tobo tobt toff tofi tofo toft toit tonb toni tonn tono toof toon toot toti toto tott ttbb ttff ttfn tton tttt