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90 98 90 99 91 00 91 01 91 02 91 03 91 04 91 05 91 06 91 07 91 08 8751 8750 8749 8748 8747 8746 8745 8744 8743 8742

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