C131121333133313233213331333133313331333133313331333131111331322123213311   >>    C13112133313331323321333133313331333133313331333133313111133132212321331   <<    C131121333133313233213331333133313331333133313331333131111331322123213313   >>      C131121333133313233213331333133313331333133313331333131111331322123213312   >>