C312312111133131212111133133313231333133313331322121111331333133313133313233311   >>    C31231211113313121211113313331323133313331333132212111133133313331313331323331   <<    C312312111133131212111133133313231333133313331322121111331333133313133313233313   >>      C312312111133131212111133133313231333133313331322121111331333133313133313233312   >>