C131121333133313233213331333133313331333133313331333133313123223213222331   >>    C13112133313331323321333133313331333133313331333133313331312322321322233   <<    C131121333133313233213331333133313331333133313331333133313123223213222333   >>      C131121333133313233213331333133313331333133313331333133313123223213222332   >>