C131121333133313233213331333133313331333133313331333133313311232313231322331   >>    C13112133313331323321333133313331333133313331333133313331331123231323132233   <<    C131121333133313233213331333133313331333133313331333133313311232313231322333   >>      C131121333133313233213331333133313331333133313331333133313311232313231322332   >>