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30 9 31 0 31 1 31 2 31 3 31 4 31 5 31 6 31 7 31 8 31 9 32 0 32 1 32 2 32 3 32 4 32 5 32 6 32 7 32 8 32 9 33 0 33 1 13872 13871 13870 13869 13868 13867 13866 13865 13864 13863 13862 13861 13860 13859 13858 13857 13856 13855 13854 13853 13852 13851

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