C11112331333132311331333132313331333131133132323213231323131221   >>    C1111233133313231133133313231333133313113313232321323132313122   <<    C11112331333132311331333132313331333131133132323213231323131223   >>      C11112331333132311331333132313331333131133132323213231323131222   >>