C131121333133313233213331333133313331312111133133313232223223311   >>    C13112133313331323321333133313331333131211113313331323222322331   <<    C131121333133313233213331333133313331312111133133313232223223313   >>      C131121333133313233213331333133313331312111133133313232223223312   >>