C3123121111331312121111331333133313331331121133133313331333133311223311   >>    C312312111133131212111133133313331333133112113313331333133313331122331   <<    C3123121111331312121111331333133313331331121133133313331333133311223313   >>      C3123121111331312121111331333133313331331121133133313331333133311223312   >>