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43 9 44 0 44 1 44 2 44 3 44 4 44 5 44 6 44 7 44 8 44 9 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983

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