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36 7 36 8 36 9 37 0 37 1 37 2 37 3 37 4 37 5 37 6 37 7 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971

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