C131121333133313233213331333133313331333133313331333133313112133331122331   >>    C13112133313331323321333133313331333133313331333133313331311213333112233   <<    C131121333133313233213331333133313331333133313331333133313112133331122333   >>      C131121333133313233213331333133313331333133313331333133313112133331122332   >>