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12 6 12 7 12 8 12 9 13 0 13 1 13 2 13 3 13 4 13 5 13 6 13 7 13 8 13 9 14 0 14 1 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958

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