C13223313311212111133133313331323133313331323113313113313113313233231131222121   >>    C1322331331121211113313331333132313331333132311331311331311331323323113122212   <<    C13223313311212111133133313331323133313331323113313113313113313233231131222123   >>      C13223313311212111133133313331323133313331323113313113313113313233231131222122   >>