C11112331333132311331333132313331333131133131133132313232112312111   >>    C1111233133313231133133313231333133313113313113313231323211231211   <<    C11112331333132311331333132313331333131133131133132313232112312113   >>      C11112331333132311331333132313331333131133131133132313232112312112   >>