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80 4 80 5 80 6 80 7 80 8 80 9 81 0 81 1 81 2 81 3 81 4 2173 2172 2171 2170 2169 2168 2167 2166 2165 2164

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