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21 17 21 18 21 19 21 20 21 21 21 22 21 23 21 24 21 25 21 26 21 27 21 28 21 29 21 30 21 31 21 32 21 33 21 34 21 35 21 36 21 37 21 38 21 39 21 40 21 41 21 42 21 43 21 44 21 45 21 46 21 47 3800 3799 3798 3797 3796 3795 3794 3793 3792 3791 3790 3789 3788 3787 3786 3785 3784 3783 3782 3781 3780 3779 3778 3777 3776 3775 3774 3773 3772 3771

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