What is the passive form of this sentence shows signs

The sentence "shows signs" is incomplete and needs a subject to be put into the passive voice. For example:

* Active: The patient shows signs of recovery.

* Passive: Signs of recovery are shown by the patient.

Or:

* Active: The building shows signs of wear and tear.

* Passive: Signs of wear and tear are shown by the building.

Let me know the complete sentence, and I can provide the passive form!