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37 09 37 10 37 11 37 12 37 13 37 14 37 15 37 16 37 17 37 18 37 19 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

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