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11 95 11 96 11 97 11 98 11 99 12 00 12 01 12 02 12 03 12 04 12 05 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988

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