C11112331333132311331333132313331333131133131133133313331322232213121   >>    C1111233133313231133133313231333133313113313113313331333132223221312   <<    C11112331333132311331333132313331333131133131133133313331322232213123   >>      C11112331333132311331333132313331333131133131133133313331322232213122   >>