C111123313331323113313331333133313231333132311312111133131133132313331123121   >>    C11112331333132311331333133313331323133313231131211113313113313231333112312   <<    C111123313331323113313331333133313231333132311312111133131133132313331123123   >>      C111123313331323113313331333133313231333132311312111133131133132313331123122   >>