C131121333133313233213331333133313331333133313331333133313331333131133212311   >>    C13112133313331323321333133313331333133313331333133313331333133313113321231   <<    C131121333133313233213331333133313331333133313331333133313331333131133212313   >>      C131121333133313233213331333133313331333133313331333133313331333131133212312   >>