pres.group.2579

23x8
1 1 0 0 0 0 0 0 
2 2 0 0 0 0 0 0 
3 3 0 0 0 0 0 0 
4 4 0 0 0 0 0 0 
5 5 0 0 0 0 0 0 
1 -6 1 6 0 0 0 0 
2 6 2 -6 0 0 0 0 
5 1 5 1 0 0 0 0 
5 3 5 3 0 0 0 0 
6 3 6 3 0 0 0 0 
2 4 2 4 0 0 0 0 
5 2 5 2 0 0 0 0 
1 3 1 3 0 0 0 0 
5 4 5 4 0 0 0 0 
1 4 1 4 0 0 0 0 
2 3 2 3 0 0 0 0 
3 4 3 4 0 0 0 0 
-6 5 6 5 0 0 0 0 
6 6 6 6 6 6 0 0 
-6 4 6 6 4 -6 0 0 
3 5 6 6 3 5 6 6 
4 6 4 6 4 -6 4 -6 
1 2 1 2 1 2 1 2