The first two productive moods yield universal negative conclusions; the third and fourth yield particular negative conclusions.
First: all minor instances are within the middle, all major instances outside → no minor is major.
Second: all minor instances are outside, all major inside → no minor is major.
Third: some minor instances are inside, all major outside → some minor are not major.
Fourth: some minor instances are outside, all major inside → some minor are not major.
The conclusion's quantity cannot be stronger than the minor premise warrants.