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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 4 937 936 935 934 933 932 931 930 929 928 927 926 925 924 923

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