C31231211113313121211113313331333133313331213331333133311331311213223331   >>    C3123121111331312121111331333133313331333121333133313331133131121322333   <<    C31231211113313121211113313331333133313331213331333133311331311213223333   >>      C31231211113313121211113313331333133313331213331333133311331311213223332   >>