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18 5 18 6 18 7 18 8 18 9 19 0 19 1 19 2 19 3 19 4 19 5 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946

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