C1111233133313231133133313331333133311221123121111113313232111131   >>    C111123313331323113313331333133313331122112312111111331323211113   <<    C1111233133313231133133313331333133311221123121111113313232111133   >>      C1111233133313231133133313331333133311221123121111113313232111132   >>