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13 81 13 82 13 83 13 84 13 85 13 86 13 87 13 88 13 89 13 90 13 91 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958

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