A 45-year-old man presents with shooting pain in the back of his tongue. The episodes are infrequent but last several minutes. The patient describes the pain as "excruciating." The pain is localized to the right side of his tongue, although occasionally the pain extends to his throat on that side. During an attack, the doctor applies an anesthetic to the tongue and this eliminates the pain. The diagnosis is Neuraligia of the _______________ cranial nerve.