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65 6 65 7 65 8 65 9 66 0 66 1 66 2 66 3 66 4 66 5 66 6 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989

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