C31231211111133131211113313331333133112111133133313331323221212121   >>    C3123121111113313121111331333133313311211113313331333132322121212   <<    C31231211111133131211113313331333133112111133133313331323221212123   >>      C31231211111133131211113313331333133112111133133313331323221212122   >>