C111123313331323113313331313331333132313331322121133132313232213111   >>    C11112331333132311331333131333133313231333132212113313231323221311   <<    C111123313331323113313331313331333132313331322121133132313232213113   >>      C111123313331323113313331313331333132313331322121133132313232213112   >>