7 12 | | | | | | | | | | ︽ ︾ | | | | | | | | | | | | | | | ︽ | + ︾ | | | | ︽ | ︾ | | | | | | | | | | | | | | | | ︽ | | | ︾ | | | | ︽ 28 ︾ | | | | | | | ︽ | ︾ ︽ | ︾ | | | | | | | | |