C13223313311212111133133313331333133313232233133313223311221123121   >>    C1322331331121211113313331333133313331323223313331322331122112312   <<    C13223313311212111133133313331333133313232233133313223311221123123   >>      C13223313311212111133133313331333133313232233133313223311221123122   >>