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72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 73 3 2113 2112 2111 2110 2109 2108 2107 2106 2105 2104

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