C131121333133313233213331333133313331333133313331333133313331333132233212321   >>    C13112133313331323321333133313331333133313331333133313331333133313223321232   <<    C131121333133313233213331333133313331333133313331333133313331333132233212323   >>      C131121333133313233213331333133313331333133313331333133313331333132233212322   >>