C131121333133313233213331333133313331333133313331333133313331311211111311   >>    C13112133313331323321333133313331333133313331333133313331333131121111131   <<    C131121333133313233213331333133313331333133313331333133313331311211111313   >>      C131121333133313233213331333133313331333133313331333133313331311211111312   >>