C3123121111113313121111331333133313223313331333133313233313231333133313223311   >>    C312312111111331312111133133313331322331333133313331323331323133313331322331   <<    C3123121111113313121111331333133313223313331333133313233313231333133313223313   >>      C3123121111113313121111331333133313223313331333133313233313231333133313223312   >>