C31231211111133131211113313331333133313331311213331333132233121   >>    C3123121111113313121111331333133313331333131121333133313223312   <<    C31231211111133131211113313331333133313331311213331333132233123   >>      C31231211111133131211113313331333133313331311213331333132233122   >>