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12 61 12 62 12 63 12 64 12 65 12 66 12 67 12 68 12 69 12 70 12 71 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956

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