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85 7 85 8 85 9 86 0 86 1 86 2 86 3 86 4 86 5 86 6 86 7 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972

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