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54 4 54 5 54 6 54 7 54 8 54 9 55 0 55 1 55 2 55 3 55 4 55 5 55 6 55 7 55 8 55 9 874 873 872 871 870 869 868 867 866 865 864 863 862 861 860

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