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56 71 9 56 72 0 56 72 1 56 72 2 56 72 3 56 72 4 56 72 5 56 72 6 56 72 7 56 72 8 56 72 9 56 73 0 56 73 1 56 73 2 56 73 3 56 73 4 56 73 5 56 73 6 56 73 7 56 73 8 56 73 9 56 74 0 56 74 1 11900 11899 11898 11897 11896 11895 11894 11893 11892 11891 11890 11889 11888 11887 11886 11885 11884 11883 11882 11881 11880 11879

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