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