C312312111133131212111133133313231333133313331322121111331333113313132311   >>    C31231211113313121211113313331323133313331333132212111133133311331313231   <<    C312312111133131212111133133313231333133313331322121111331333113313132313   >>      C312312111133131212111133133313231333133313331322121111331333113313132312   >>