C3123121111113313121111331333133313311211113313331333132322333123311   >>    C312312111111331312111133133313331331121111331333133313232233312331   <<    C3123121111113313121111331333133313311211113313331333132322333123313   >>      C3123121111113313121111331333133313311211113313331333132322333123312   >>