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70 0 70 1 70 2 70 3 70 4 70 5 70 6 70 7 70 8 70 9 71 0 2171 2170 2169 2168 2167 2166 2165 2164 2163 2162

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