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72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 73 3 2163 2162 2161 2160 2159 2158 2157 2156 2155 2154

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