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36 59 36 60 36 61 36 62 36 63 36 64 36 65 36 66 36 67 36 68 36 69 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989

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