#3

4-3' 1 1
1 
#1 
4	% 
 1 0 0 0
 0 1 0 0
 0 0 1 0
 0 0 0 1
1,1,1,1 1 1
1 
#1 
4	% 
 1 0 0 0
 0 1 0 0
 0 0 1 0
 0 0 0 1
1,1;1,1 1 3
5 
#1 
4	% 
 -1  0 -1 -2
  1 -1  0  1
  0  0  0  1
  0  1  0  0
