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