C111123313331323113313331333133313331323132333131133132313232213111   >>    C11112331333132311331333133313331333132313233313113313231323221311   <<    C111123313331323113313331333133313331323132333131133132313232213113   >>      C111123313331323113313331333133313331323132333131133132313232213112   >>