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90 8 90 9 91 0 91 1 91 2 91 3 91 4 91 5 91 6 91 7 91 8 2189 2188 2187 2186 2185 2184 2183 2182 2181 2180

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