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52 7 52 8 52 9 53 0 53 1 53 2 53 3 53 4 53 5 53 6 53 7 2179 2178 2177 2176 2175 2174 2173 2172 2171 2170

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