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55 9 56 0 56 1 56 2 56 3 56 4 56 5 56 6 56 7 56 8 56 9 3901 3900 3899 3898 3897 3896 3895 3894 3893 3892

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