TRIANGLE = [
  [ 0,  0,  0,  0,  0,  0,  0,  5,  5,  0,  0,  0,  0,  0,  0,  0],
  [ 0,  0,  0,  0,  0,  0,  1,  9,  9,  1,  0,  0,  0,  0,  0,  0],
  [ 0,  0,  0,  0,  0,  0,  5,  5,  5,  5,  0,  0,  0,  0,  0,  0],
  [ 0,  0,  0,  0,  0,  1,  9,  1,  1,  9,  1,  0,  0,  0,  0,  0],