A 25-year-old male presents to the emergency department after motor vehicle accident and complains of headache. Vitals are within normal limits and imaging studies reveal no intracranial hemorrhage. Physical examination without neurologic deficits. Osteopathic structural examination reveals significantly reduced cranial rhythmic impulse. Vault hold with minimal movement of sphenobasilar synchondrosis (SBS). Given history and exam findings, which of the following is the most likely cranial strain pattern?