class C0
{ public: int i0; };
class C1
: virtual public C0
{ public: int i1; };
class C2
: public C0
, public C1
{ public: int i2; };
class C3
: virtual public C0
, public C1
, public C2
{ public: int i3; };
class C4
: public C2
, public C3
, virtual public C1
, virtual public C0
{ public: int i4; };
class C5
: virtual public C2
, public C1
, public C0
{ public: int i5; };
class C6
: virtual public C0
, virtual public C5
, public C1
, public C3
, public C4
{ public: int i6; };
class C7
: public C6
, virtual public C0
, public C1
, public C2
, virtual public C4
{ public: int i7; };
class C8
: public C2
, virtual public C6
, virtual public C7
, public C5
, public C3
, virtual public C4
{ public: int i8; };
class C9
: public C5
, virtual public C3
, virtual public C8
, public C0
, public C2
, public C7
, public C6
, public C4
{ public: int i9; };