[shu-] Sherlock Holmes is in [1] front of the [-ai] high school where his wits has 衰 declined. He wears a 衣 dress and walks around with his 口 mouth permanently dragged along the 一 ground. Some high school kids ask him some simple questions that he fails to answer. They say that he is the elementary one. His intelligence has indeed 衰 declined to that of an elementary school student. What is the source of this mysterious 衰 decline?