C131121333133313233213331333133313331312111133133313331323123233311   >>    C13112133313331323321333133313331333131211113313331333132312323331   <<    C131121333133313233213331333133313331312111133133313331323123233313   >>      C131121333133313233213331333133313331312111133133313331323123233312   >>