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16 30 16 31 16 32 16 33 16 34 16 35 16 36 16 37 16 38 16 39 16 40 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

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