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81 0 81 1 81 2 81 3 81 4 81 5 81 6 81 7 81 8 81 9 82 0 82 1 82 2 82 3 82 4 82 5 1709 1708 1707 1706 1705 1704 1703 1702 1701 1700 1699 1698 1697 1696 1695

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