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87 00 87 01 87 02 87 03 87 04 87 05 87 06 87 07 87 08 87 09 87 10 6709 6708 6707 6706 6705 6704 6703 6702 6701 6700

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