C31231211113313121211113313331333133313331213331333133313231132232321   >>    C3123121111331312121111331333133313331333121333133313331323113223232   <<    C31231211113313121211113313331333133313331213331333133313231132232323   >>      C31231211113313121211113313331333133313331213331333133313231132232322   >>