C13223313311212111133133313331333133313232233133313112211232313121   >>    C1322331331121211113313331333133313331323223313331311221123231312   <<    C13223313311212111133133313331333133313232233133313112211232313123   >>      C13223313311212111133133313331333133313232233133313112211232313122   >>