C11112331333132311331333132313331333131133132323213231333132313112211231   >>    C1111233133313231133133313231333133313113313232321323133313231311221123   <<    C11112331333132311331333132313331333131133132323213231333132313112211233   >>      C11112331333132311331333132313331333131133132323213231333132313112211232   >>