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72 2 72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 2174 2173 2172 2171 2170 2169 2168 2167 2166 2165

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