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21 44 21 45 21 46 21 47 21 48 21 49 21 50 21 51 21 52 21 53 21 54 38890 38889 38888 38887 38886 38885 38884 38883 38882 38881

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