ogog ogoi ogon oici oido oigo oiii oint oion oita oitc oiti onan onat onc- onca oncd onco onct onda ondi ondo onga ongi ongo onia onic onit onna onni onno onod onon ont- ontc onti onto ooaa ooda oodi ooia ooid oona oont oooo otac otan otcd otic otin otit oto- otog oton otoo otta otti otto taa- taag taan taat taca tacc taci taco tact tada tadg tado taga tagg tagi tago taia taig tain taio tait tana tand tang tani tann tano tant taoa tata tati tato tatt tcad tcca tccc tcdd tcga tcnn tcon tctc tdac tdna tgcc tgtc tiaa tian tiao tica ticc tico tidc tidd tiga tigi tiit tina tinc tind ting tini tinn tino tint tion tita titc titi tito titt tnag tnca tncc tndd toad toan toat toca toci toco toda todd todi todo todt toga togo togt toid toit tona tong toni tonn tono tooa tood toon toot tota totc totd toti toto tott ttcn tton tttt