{{1, 0, -1, 0, -1, 0, 0, 0, 0, -2, 2, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0}, 
 {0, 1, 0, 1, 0, -1, -1/2, -1/2, -1/2, 0, 0, 1/2, 0, -5/2, 0, 5/2, 1/2, -1/2, 
  -1/2, -1/2, 1/2, 1/2}}
