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78 2 78 3 78 4 78 5 78 6 78 7 78 8 78 9 79 0 79 1 79 2 79 3 79 4 79 5 79 6 79 7 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971

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