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16 51 16 52 16 53 16 54 16 55 16 56 16 57 16 58 16 59 16 60 16 61 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

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