C131121333133313233213331333133313331333133313331333133313331311332223331   >>    C13112133313331323321333133313331333133313331333133313331333131133222333   <<    C131121333133313233213331333133313331333133313331333133313331311332223333   >>      C131121333133313233213331333133313331333133313331333133313331311332223332   >>