︽ ︾ 5 | 1 9 ︽ ︾ | | ︽ | | ︾ | | | | | | | | | | | | | | | | | | | | | | | | | | | ︽ | | ︾ | | | | | | | | | | | | | | | | | | | | | | | | | | | ︵ | ︶ | | | | | | | | | | | | | | | | | ︵ 4 30 ︶ | |