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10 57 10 58 10 59 10 60 10 61 10 62 10 63 10 64 10 65 10 66 10 67 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947

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