9 18 | 9 18 | | | | ︽ ︵ | ︶︾ ︽ | ︵ ︶︾ | | | ︽ | ︾ | | | | | | | | | | | | | | | | | | | | ︽ ︾ | | | | | | | | | | | | ︽ ︵ | ︶︾ | | | | | | | | | | ︽ | ︵ ︶︾ | | |