C312312111111331312111133133313331333121111121133133313113313223313232211312111   >>    C31231211111133131211113313331333133312111112113313331311331322331323221131211   <<    C312312111111331312111133133313331333121111121133133313113313223313232211312113   >>      C312312111111331312111133133313331333121111121133133313113313223313232211312112   >>