C131121333133313233213331333133313331333133313331333133313231123313231322331   >>    C13112133313331323321333133313331333133313331333133313331323112331323132233   <<    C131121333133313233213331333133313331333133313331333133313231123313231322333   >>      C131121333133313233213331333133313331333133313331333133313231123313231322332   >>