C31231211113313121211113313331333133313331213331333133313222313231321   >>    C3123121111331312121111331333133313331333121333133313331322231323132   <<    C31231211113313121211113313331333133313331213331333133313222313231323   >>      C31231211113313121211113313331333133313331213331333133313222313231322   >>