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86 31 86 32 86 33 86 34 86 35 86 36 86 37 86 38 86 39 86 40 86 41 6818 6817 6816 6815 6814 6813 6812 6811 6810 6809

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