C3123121111113313121111331333132212111133133313113313113313223311   >>    C312312111111331312111133133313221211113313331311331311331322331   <<    C3123121111113313121111331333132212111133133313113313113313223313   >>      C3123121111113313121111331333132212111133133313113313113313223312   >>