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12 44 12 45 12 46 12 47 12 48 12 49 12 50 12 51 12 52 12 53 12 54 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921

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