C131121333133313233213331333133313331333133313331333133313123223212322331   >>    C13112133313331323321333133313331333133313331333133313331312322321232233   <<    C131121333133313233213331333133313331333133313331333133313123223212322333   >>      C131121333133313233213331333133313331333133313331333133313123223212322332   >>