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87 56 87 57 87 58 87 59 87 60 87 61 87 62 87 63 87 64 87 65 87 66 9194 9193 9192 9191 9190 9189 9188 9187 9186 9185

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