1 0 0 0 0 1 0 0 0 0 1 0
1 0 0 0 0 0 1 0 0 1 0 0
1 0 0 0 0 -1 0 3/4 0 0 -1 3/4
1 0 0 0 0 0 -1 3/4 0 -1 0 3/4