[ [ -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
  [  0, 0, 0, 0, 0,-1, 0, 0,-1, 0, 0 ],
  [  0,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
  [ -1, 0, 1,-1, 0, 0, 1, 0, 0, 1, 0 ],
  [  1,-1, 0, 0, 0, 0, 0, 0,-1, 0, 0 ],
  [  0, 1,-1, 0, 0, 0, 0, 0, 0, 0, 0 ],
  [  0, 0, 0, 0, 0, 0, 0, 0, 1,-1, 0 ],
  [  0, 0, 0, 0,-1, 0, 1,-1, 0, 1, 0 ],
  [  0, 0, 1, 0,-1, 0, 0, 0, 0, 0,-1 ],
  [  0, 0, 0, 0, 1,-1, 0, 0, 0, 0, 0 ],
  [  0, 0, 0, 0, 0, 1,-1, 0, 0, 0, 0 ] ]