C111123313331323113313331333133313231333132311312111133132321222121   >>    C11112331333132311331333133313331323133313231131211113313232122212   <<    C111123313331323113313331333133313231333132311312111133132321222123   >>      C111123313331323113313331333133313231333132311312111133132321222122   >>