{{1, 0, -1/3, 0, 1, 0, -1/6, 0, 0, 0, -1/3, 1/3, 1/6, 1/6, -1/6, 0, 0, 1/6, 
  -2/3, 0, 0, -1/6, -1/6, 0}, {0, 1, 0, -1/3, 0, 1, 0, -1/6, -1/3, 1/3, 0, 0, 
  0, 0, -1/6, 1/6, 1/6, 0, 0, -5/6, -1/6, 0, 0, 1/6}}
