namespace B
{
  using C;

  partial class Test [T]
    where T : IA, IB
  { }
}

namespace B
{
  partial class Test [T]
    where T : C.IB, C.IA
  { }
}

namespace B
{
  partial class Test [T]
  { }
}

class X
{
  static Main () :  void
  { }
}

namespace C {
  interface IA { }
  interface IB { }
}
/*
BEGIN-OUTPUT
END-OUTPUT
*/