1  class C0
       2  { public: int i0; };
       3  class C1
       4   :  virtual public C0
       5  { public: int i1; };
       6  class C2
       7   :  public C0
       8   ,  public C1
       9  { public: int i2; };
      10  class C3
      11   :  virtual public C0
      12   ,  public C1
      13   ,  public C2
      14  { public: int i3; };
      15  class C4
      16   :  public C2
      17   ,  public C3
      18   ,  virtual public C1
      19   ,  virtual public C0
      20  { public: int i4; };
      21  class C5
      22   :  virtual public C2
      23   ,  public C1
      24   ,  public C0
      25  { public: int i5; };
      26  class C6
      27   :  virtual public C0
      28   ,  virtual public C5
      29   ,  public C1
      30   ,  public C3
      31   ,  public C4
      32  { public: int i6; };
      33  class C7
      34   :  public C6
      35   ,  virtual public C0
      36   ,  public C1
      37   ,  public C2
      38   ,  virtual public C4
      39  { public: int i7; };
      40  class C8
      41   :  public C2
      42   ,  virtual public C6
      43   ,  virtual public C7
      44   ,  public C5
      45   ,  public C3
      46   ,  virtual public C4
      47  { public: int i8; };
      48  class C9
      49   :  public C5
      50   ,  virtual public C3
      51   ,  virtual public C8
      52   ,  public C0
      53   ,  public C2
      54   ,  public C7
      55   ,  public C6
      56   ,  public C4
      57  { public: int i9; };