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12 67 12 68 12 69 12 70 12 71 12 72 12 73 12 74 12 75 12 76 12 77 2179 2178 2177 2176 2175 2174 2173 2172 2171 2170

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