C13223313311212111133133313331323133313233313121111121111132212121   >>    C1322331331121211113313331333132313331323331312111112111113221212   <<    C13223313311212111133133313331323133313233313121111121111132212123   >>      C13223313311212111133133313331323133313233313121111121111132212122   >>