Complex Circular Dependency among classes

I have 5 classes (A,B,C,D,E), each of which will have their own class and header files.

class A{};
class B
{
  B(A&a);
};
class C
{
  C(B&b);
};
class D:public A
{};
class E:public D
{
   vector<C*> vc;
};

Forward declaration will not work because I also have a lot of sharepointers being used in each of those classes.