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13 69 13 70 13 71 13 72 13 73 13 74 13 75 13 76 13 77 13 78 13 79 1646 1645 1644 1643 1642 1641 1640 1639 1638 1637

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