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88 77 88 78 88 79 88 80 88 81 88 82 88 83 88 84 88 85 88 86 88 87 6540 6539 6538 6537 6536 6535 6534 6533 6532 6531

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid