C13223313311212111133133313331333133313232233133313121111331333132313231121211   >>    C1322331331121211113313331333133313331323223313331312111133133313231323112121   <<    C13223313311212111133133313331333133313232233133313121111331333132313231121213   >>      C13223313311212111133133313331333133313232233133313121111331333132313231121212   >>