No one object is included on both sides of a dividing line in any example. Left examples when seen as Bongard Problems may either read as "not [right pattern] vs. [right pattern]" or have no unconvoluted solution at all, depending on whether the left side includes any objects that would fit in with the right side.
Regarded as Bongard Problems, the examples sorted left here are @right-narrow and not @left-narrow, with the left side the negation of the right side (@notso). |