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21 16 21 17 21 18 21 19 21 20 21 21 21 22 21 23 21 24 21 25 21 26 38890 38889 38888 38887 38886 38885 38884 38883 38882 38881

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