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22 3 22 4 22 5 22 6 22 7 22 8 22 9 23 0 23 1 23 2 23 3 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951

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