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87 5 87 6 87 7 87 8 87 9 88 0 88 1 88 2 88 3 88 4 88 5 2182 2181 2180 2179 2178 2177 2176 2175 2174 2173

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