C131121333133313233213331333133313331333133331211113313331322333132332311   >>    C13112133313331323321333133313331333133313333121111331333132233313233231   <<    C131121333133313233213331333133313331333133331211113313331322333132332313   >>      C131121333133313233213331333133313331333133331211113313331322333132332312   >>