C1111233133313231133133313331333133311221123121111331311331323133313113311311   >>    C111123313331323113313331333133313331122112312111133131133132313331311331131   <<    C1111233133313231133133313331333133311221123121111331311331323133313113311313   >>      C1111233133313231133133313331333133311221123121111331311331323133313113311312   >>