C31231211111133131211113313331333133312111112111133133313331333132322121221   >>    C3123121111113313121111331333133313331211111211113313331333133313232212122   <<    C31231211111133131211113313331333133312111112111133133313331333132322121223   >>      C31231211111133131211113313331333133312111112111133133313331333132322121222   >>