Backend List Page, hierarchy

Hi,
I have created several dynamic contents in sitefinity backend.
I have a content called "Cliente" which have a field called "Related client" of type Related Data to relate clients between them.
So I have Client 1, Client 2 of type Client and Client 2 is related with Client 1 by the "Related client" field.
I need to modify the "Client List" backend page.
I need to show the relations between clients in this page, something like this:

Client 1
           |----- Client 2

How can I achieve this??
Thanks in advance.