Contradictory negator. Negates the bridi in which it appears. It has scope over quantifiers that follow.
Time tense and NA interactions need to be made more clear.
Contrary negator. Converts a tanru-unit into another tanru-unit with a complementary meaning, such that they can't both be true at the same time. With BO, it converts a sumti into another sumti whose referent is the complement of the unconverted sumti.
Converts a tanru-unit into another tanru-unit with the same meaning. With BO, it converts a sumti into another sumti whose referent is the same as the referent of the unconverted sumti.
Converts a tanru-unit into another tanru-unit with opposite meaning. With BO, it converts a sumti into another sumti whose referent is opposite of the referent of the unconverted sumti.
Converts a tanru-unit into another tanru-unit with neutral meaning between the original meaning and its opposite. With BO, it converts a sumti into another sumti whose referent is neutral between the referent of the unconverted sumti and its opposite.