C312312111133131212111133133313231333133313331331123121111112231323331323223311   >>    C31231211113313121211113313331323133313331333133112312111111223132333132322331   <<    C312312111133131212111133133313231333133313331331123121111112231323331323223313   >>      C312312111133131212111133133313231333133313331331123121111112231323331323223312   >>