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37 4 37 5 37 6 37 7 37 8 37 9 38 0 38 1 38 2 38 3 38 4 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961

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