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86 7 86 8 86 9 87 0 87 1 87 2 87 3 87 4 87 5 87 6 87 7 87 8 87 9 88 0 88 1 88 2 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916

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