C31231211111133131211113313331333121111133313331333133313331333132313232231   >>    C3123121111113313121111331333133312111113331333133313331333133313231323223   <<    C31231211111133131211113313331333121111133313331333133313331333132313232233   >>      C31231211111133131211113313331333121111133313331333133313331333132313232232   >>