C131121333133313233213331333133313331333133313331333133313331333133313223131231   >>    C13112133313331323321333133313331333133313331333133313331333133313331322313123   <<    C131121333133313233213331333133313331333133313331333133313331333133313223131233   >>      C131121333133313233213331333133313331333133313331333133313331333133313223131232   >>