C312312111111331312111133133313331331121111331333133313233211113313331322311   >>    C31231211111133131211113313331333133112111133133313331323321111331333132231   <<    C312312111111331312111133133313331331121111331333133313233211113313331322313   >>      C312312111111331312111133133313331331121111331333133313233211113313331322312   >>