The 'had had' versions are actually a feasible examples, and don't rely on cutting out other words to make them work. Still, it's uncommon to put so many had's

The 'had had' versions are actually a feasible examples, and don't rely on cutting out other words to make them work. Still, it's uncommon to put so many had's together. You probably wouldn't use four had's in that particular example though - "All the faith that he had, had had no effect..." or "All the faith that he had had, had no effect...".