C3123121111113313121111331333133313121111133313223313133313331312233231   >>    C312312111111331312111133133313331312111113331322331313331333131223323   <<    C3123121111113313121111331333133313121111133313223313133313331312233233   >>      C3123121111113313121111331333133313121111133313223313133313331312233232   >>