C13223313311212111133133313331333133313232233133313332221233121   >>    C1322331331121211113313331333133313331323223313331333222123312   <<    C13223313311212111133133313331333133313232233133313332221233123   >>      C13223313311212111133133313331333133313232233133313332221233122   >>