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72 2 72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 2188 2187 2186 2185 2184 2183 2182 2181 2180 2179

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