ofta oiba oici oiii oint oion oita oitc oiti onab onan onat onc- onca oncf onco onct onia onic onit onna onni onno onon ont- ontc onti onto ooaa ooba oobi ooff ooia oona oont oooo ootb otac otan otfc otic otif otin otit oto- otof oton otoo otta otti otto taa- taaf taan taat taba tabb tabc tabi tabo taca tacc taci taco tact tafa tafc taff tafi tafo taft taia tain taio tait tana tani tann tano tant taoa tata tatb tati tato tatt tbaf tbca tbcb tbcc tbit tbnf tbta tcca tccc tcfc tcnn tcon tctc tfca tfin tfot tftc tiaa tiab tiaf tian tiao tiba tibi tica ticc tico tifa tiff tifo tift tiit tina tinc tini tinn tino tint tion tita titc titi tito titt tnbc tnca tncc tnfc toab toan toat toba tobi tobo tobt toca toci toco tofa toff tofi tofo toft toit tona tonb toni tonn tono tooa toof toon toot tota totc toti toto tott ttab ttbb ttcn ttfa ttfc ttff ttfn tton tttt