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