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81 28 81 29 81 30 81 31 81 32 81 33 81 34 81 35 81 36 81 37 81 38 9705 9704 9703 9702 9701 9700 9699 9698 9697 9696

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