BinNode<int> s = new BinNode<int>(5);
            BinNode<int> s1 = new BinNode<int>(7);
            BinNode<int> s2 = new BinNode<int>(7);
            s.SetLeft(s1);
            s.SetRight(s2);
            BinNode<int> s3 = new BinNode<int>(3);
            BinNode<int> s4 = new BinNode<int>(3);
            s1.SetLeft(s3);
            s1.SetRight(s3);
            BinNode<int> s5 = new BinNode<int>(3);
            BinNode<int> s6 = new BinNode<int>(3);
            s2.SetLeft(s5);
            s2.SetRight(s6);
            BinNode<int> s7 = new BinNode<int>(2);
            s6.SetLeft(s7);
            BinNode<int> s8 = new BinNode<int>(2);
            s7.SetLeft(s8);
            BinNode<int> s9 = new BinNode<int>(6);
            BinNode<int> s10 = new BinNode<int>(10);
            BinNode<int> s11 = new BinNode<int>(6);
            s2.SetLeft(s9);
            s9.SetLeft(s10);
            s10.SetRight(s11);