C31231211111133131211113313331333121111133313331333133313331333133313221123231   >>    C3123121111113313121111331333133312111113331333133313331333133313331322112323   <<    C31231211111133131211113313331333121111133313331333133313331333133313221123233   >>      C31231211111133131211113313331333121111133313331333133313331333133313221123232   >>