“…12 there are no universal affirmative propositions and particular affirmative propositions. We face only universal negative propositions and particular negative propositions such as 'No S' 4,9 are S' 4,10 ', where S' 4,9 are neighbors for S 4,10 differing from S 4,9 and S' 4,10 are neighbors for S 4,9 differing from S 4,10 , and 'Some S' 4,11 are not S' 5,11 ', where S' 4,11 are neighbors for S 5,11 differing from S 4,11 and S' 5,11 are neighbors for S 4,11 differing from S 5,11 .…”