{{1, 0, 0, 0, 1/2, 0, -1/2, 1/2, -1, -1, 1/2, 1, -1, 0, 0, 0, 1, 0, -1, 0, 0, 
  -1/2, 1, -1, 3}, {0, 1, 1, -2, 0, -1/3, 0, 0, 1, 0, 0, 0, 0, -2, 4, 2/3, 0, 
  -13/6, 0, 1/6, -2/3, 0, 0, 0, -2/3}}
