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36 47 36 48 36 49 36 50 36 51 36 52 36 53 36 54 36 55 36 56 36 57 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989

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