C111123313331323113313331333133313121111331322211232313231323132311   >>    C11112331333132311331333133313331312111133132221123231323132313231   <<    C111123313331323113313331333133313121111331322211232313231323132313   >>      C111123313331323113313331333133313121111331322211232313231323132312   >>