C13223313311212111133133313331333133313232233133313331323321111132313232212121   >>    C1322331331121211113313331333133313331323223313331333132332111113231323221212   <<    C13223313311212111133133313331333133313232233133313331323321111132313232212123   >>      C13223313311212111133133313331333133313232233133313331323321111132313232212122   >>