C312312111111331312111133133313331331121111331333133313223313311   >>    C31231211111133131211113313331333133112111133133313331322331331   <<    C312312111111331312111133133313331331121111331333133313223313313   >>      C312312111111331312111133133313331331121111331333133313223313312   >>