C131121333133313233213331333133313331333133313331333133313123223213113323311   >>    C13112133313331323321333133313331333133313331333133313331312322321311332331   <<    C131121333133313233213331333133313331333133313331333133313123223213113323313   >>      C131121333133313233213331333133313331333133313331333133313123223213113323312   >>