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58 5 58 6 58 7 58 8 58 9 59 0 59 1 59 2 59 3 59 4 59 5 59 6 59 7 59 8 59 9 60 0 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963

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