C131121333133313233213331333133313331333133313331333133313121111331332311   >>    C13112133313331323321333133313331333133313331333133313331312111133133231   <<    C131121333133313233213331333133313331333133313331333133313121111331332313   >>      C131121333133313233213331333133313331333133313331333133313121111331332312   >>