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12 14 12 15 12 16 12 17 12 18 12 19 12 20 12 21 12 22 12 23 12 24 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928

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