C312312111133131212111133133313231333132311331333133313232233233311   >>    C31231211113313121211113313331323133313231133133313331323223323331   <<    C312312111133131212111133133313231333132311331333133313232233233313   >>      C312312111133131212111133133313231333132311331333133313232233233312   >>