C131121333133313233213331333133313331333133313331333133313331333131211311331   >>    C13112133313331323321333133313331333133313331333133313331333133313121131133   <<    C131121333133313233213331333133313331333133313331333133313331333131211311333   >>      C131121333133313233213331333133313331333133313331333133313331333131211311332   >>