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17 14 17 15 17 16 17 17 17 18 17 19 17 20 17 21 17 22 17 23 17 24 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

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