---
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      - [2, 2, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3]
      - [2, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2]
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      - [2, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2]
      - [3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2, 2]
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    -
      - [3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2, 2]
      - [4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2, 2, 3]
    -
      - [4, 4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2, 2, 3]
      - [4, 5, 5, 5, 6, 6, 7, 7, 6, 5, 4, 3, 2, 2, 3, 4]
origin:
  - 0
  - 0
  - 0