C11112331333132311331333132313331333131133132323213231333132313331333131212121   >>    C1111233133313231133133313231333133313113313232321323133313231333133313121212   <<    C11112331333132311331333132313331333131133132323213231333132313331333131212123   >>      C11112331333132311331333132313331333131133132323213231333132313331333131212122   >>