C131121333133313233213331333133313331333133313331333131111331323323331333123311   >>    C13112133313331323321333133313331333133313331333133313111133132332333133312331   <<    C131121333133313233213331333133313331333133313331333131111331323323331333123313   >>      C131121333133313233213331333133313331333133313331333131111331323323331333123312   >>