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18 42 18 43 18 44 18 45 18 46 18 47 18 48 18 49 18 50 18 51 18 52 18 53 18 54 18 55 18 56 18 57 3897 3896 3895 3894 3893 3892 3891 3890 3889 3888 3887 3886 3885 3884 3883

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