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13 63 13 64 13 65 13 66 13 67 13 68 13 69 13 70 13 71 13 72 13 73 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958

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