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10 56 10 57 10 58 10 59 10 60 10 61 10 62 10 63 10 64 10 65 10 66 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955

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