C13223313311212111133133313331333133313232233133313333121121121   >>    C1322331331121211113313331333133313331323223313331333312112112   <<    C13223313311212111133133313331333133313232233133313333121121123   >>      C13223313311212111133133313331333133313232233133313333121121122   >>