3
exp i n 

12
0 -1 0 
0 1 0 
0 0 -1 
0 0 1 
0 0 0 
0 0 0 
0 0 0 
0 0 0 
0 0 0 
0 0 0 
0 0 0 
-1 1 0 
0 1 0 
0 -1 0 
0 0 1 
0 0 -1 
-1 0 0 
-1 -1 0 
0 -1 0 
-1 1 0 
-1 0 -1 
0 -1 -1 
0 0 -1 
0 0 0 
1
-1
0
0
-2
-4
-2
0
-4
-4
-2
0

7
0 0 0 0 0 -1 -2
1 0 0 0 0 0 1
-1 0 0 0 0 0 -1
0 1 0 0 0 0 1
0 -1 0 0 0 0 -1
0 0 1 0 0 -1 0
0 0 -1 0 0 1 0


0
0