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60 7 60 8 60 9 61 0 61 1 61 2 61 3 61 4 61 5 61 6 61 7 61 8 61 9 62 0 62 1 62 2 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972

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