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13 39 13 40 13 41 13 42 13 43 13 44 13 45 13 46 13 47 13 48 13 49 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947

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