C13223313311212111133133313331323133313331323113313113313231323321232312121   >>    C1322331331121211113313331333132313331333132311331311331323132332123231212   <<    C13223313311212111133133313331323133313331323113313113313231323321232312123   >>      C13223313311212111133133313331323133313331323113313113313231323321232312122   >>