C11112331312111112111133133313331333133311222121111133312113322331   >>    C1111233131211111211113313331333133313331122212111113331211332233   <<    C11112331312111112111133133313331333133311222121111133312113322333   >>      C11112331312111112111133133313331333133311222121111133312113322332   >>