[
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    2,
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  ],
  [
    3,
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    4,
    11
  ],
  [
    5,
    18,
    6,
    19
  ],
  [
    7,
    22,
    8,
    23
  ],
  [
    9,
    2,
    10,
    3
  ],
  [
    11,
    17,
    12,
    16
  ],
  [
    24,
    13,
    1,
    14
  ],
  [
    15,
    21,
    16,
    20
  ],
  [
    17,
    4,
    18,
    5
  ],
  [
    19,
    13,
    20,
    12
  ],
  [
    21,
    8,
    22,
    9
  ],
  [
    14,
    23,
    15,
    24
  ]
]

[]