C312312111133131212111133133313231333133313331322121111331333132233122311   >>    C31231211113313121211113313331323133313331333132212111133133313223312231   <<    C312312111133131212111133133313231333133313331322121111331333132233122313   >>      C312312111133131212111133133313231333133313331322121111331333132233122312   >>