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51 56 1 51 56 2 51 56 3 51 56 4 51 56 5 51 56 6 51 56 7 51 56 8 51 56 9 51 57 0 51 57 1 51 57 2 51 57 3 51 57 4 51 57 5 51 57 6 17997 17996 17995 17994 17993 17992 17991 17990 17989 17988 17987 17986 17985 17984 17983

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