C1111233133313231133133313331333132313331323113121111331311331123311   >>    C111123313331323113313331333133313231333132311312111133131133112331   <<    C1111233133313231133133313331333132313331323113121111331311331123313   >>      C1111233133313231133133313331333132313331323113121111331311331123312   >>