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21 37 21 38 21 39 21 40 21 41 21 42 21 43 21 44 21 45 21 46 21 47 3796 3795 3794 3793 3792 3791 3790 3789 3788 3787

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