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