bbbb bbci bbin bcbc bccc bcci bcit bctc bibb bibi bibo bicc bici bico biin bin- binc bini binn bino bint bio- bioc bioi bion biot bitc bito bitt bnib bnin bnoc bobb bobi bobo boco boi- boii boin boit bonc boni bonn bono bont boob booc boon boot botb boti botn boto bott btcc btob bttb c-bo cbbc cbcc cbcn cbct cbit cbot cbtc ccbc ccbn cccb cccc ccci ccic ccii ccnb ccnc ccni ccob ccoc cctb cctc cctt cibc cibi cibo cicc cici cico cict ciii ciit cin- cinc cini cino cint ciob cion citb citi cito citt cnbc cnci cnco cnib cnic cntc cobb cobi cobo coco coct coin coit con- conc coni conn cono cont coob coon coot cotb cotc coti cotn coto cott ctbi ctic ctot cttn i-no ibon ibot ibtb ibtc icbc iccb iccc icci iccn icco icct icnb icnc icoc icon iiii iiio iiit iino iioi iioo iitt inbo incb inci inco init inni inno ino- inoi inon inot inti intn into iobi ioci ioii ioio ioit ioni ionn iono iooi iooo ioto itic itin itno itoi iton itoo itto n-ii nbbc nbbo nbcc nbci nbco nbic nbti ncbc ncbi nccc ncci nccn ncct ncit ncnc ncoc nctc nibi nibo nicc nici nico niit nini nino nion nioo nitb nitc niti nito nnit nnnn nnot nntn nobc nobi nobo noci noco noct noib noin noio noit non- noni nonn nono nont noo- noob noon nooo noot not- noti noto nott ntbc ntcc ntto obbo obin obit oboi obon obot ocbc occc occi occn occt ocin ocon oct- octi octo oici oiii oint oion oitc oiti onc- onco onct onic onit onni onno onon ont- ontc onti onto oobi oont oooo ootb otic otin otit oto- oton otoo otti otto tbcb tbcc tbit tccc tcnn tcon tctc tibi ticc tico tiit tinc tini tinn tino tint tion titc titi tito titt tnbc tncc tobi tobo tobt toci toco toit tonb toni tonn tono toon toot totc toti toto tott ttbb ttcn tton tttt