1 0 0 0 0 1 0 0 0 0 1 0
1 0 0 0 0 0 1 1/2 0 1 0 -1/2
1 0 0 0 0 -1 0 7/4 0 0 -1 3/4
1 0 0 0 0 0 -1 5/4 0 -1 0 5/4