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13 97 13 98 13 99 14 00 14 01 14 02 14 03 14 04 14 05 14 06 14 07 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988

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