小渊是个聪明的孩子，他经常会给周围的小朋友们将写自己认为有趣的内容。最近，他准备给小朋友们讲解立体图，请你帮他画出立体图。(Xiaoyuan is a clever child. He often writes to his children around what he thinks is interesting. Recently, he is going to explain the stereogram to the children, please help him draw the stereogram.)