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89 1 89 2 89 3 89 4 89 5 89 6 89 7 89 8 89 9 90 0 90 1 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948

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