C31231211111133131211113313331333133112111133232133313221121211   >>    C3123121111113313121111331333133313311211113323213331322112121   <<    C31231211111133131211113313331333133112111133232133313221121213   >>      C31231211111133131211113313331333133112111133232133313221121212   >>