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14 41 14 42 14 43 14 44 14 45 14 46 14 47 14 48 14 49 14 50 14 51 14 52 14 53 14 54 14 55 14 56 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

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