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87 46 87 47 87 48 87 49 87 50 87 51 87 52 87 53 87 54 87 55 87 56 9190 9189 9188 9187 9186 9185 9184 9183 9182 9181

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