C312312111111331312111133133313331331121111331333133313223113313223111   >>    C31231211111133131211113313331333133112111133133313331322311331322311   <<    C312312111111331312111133133313331331121111331333133313223113313223113   >>      C312312111111331312111133133313331331121111331333133313223113313223112   >>