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88 4 88 5 88 6 88 7 88 8 88 9 89 0 89 1 89 2 89 3 89 4 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915

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