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57 5 57 6 57 7 57 8 57 9 58 0 58 1 58 2 58 3 58 4 58 5 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

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