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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 2177 2176 2175 2174 2173 2172 2171 2170 2169 2168

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