C131121333133313233213331333133313331333131133133313331333133313233232231   >>    C13112133313331323321333133313331333133313113313331333133313331323323223   <<    C131121333133313233213331333133313331333131133133313331333133313233232233   >>      C131121333133313233213331333133313331333131133133313331333133313233232232   >>