C13223313311212111133133313331333133313232233133313113313311232333133323321221   >>    C1322331331121211113313331333133313331323223313331311331331123233313332332122   <<    C13223313311212111133133313331333133313232233133313113313311232333133323321223   >>      C13223313311212111133133313331333133313232233133313113313311232333133323321222   >>