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36 40 36 41 36 42 36 43 36 44 36 45 36 46 36 47 36 48 36 49 36 50 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988

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