{{1, -1, -1, 0, 0, 4, -2, 1, 0, 0, 0, -1, 1, 0}, 
 {0, 0, 0, 1, -1, 3, -3, 0, 1/2, -1/2, -1/2, -1/2, 3/2, 1/2}}
