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81 4 81 5 81 6 81 7 81 8 81 9 82 0 82 1 82 2 82 3 82 4 2188 2187 2186 2185 2184 2183 2182 2181 2180 2179

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