C13112133313331323321333133313331333133313233313331333131213231   >>    C1311213331333132332133313331333133313331323331333133313121323   <<    C13112133313331323321333133313331333133313233313331333131213233   >>      C13112133313331323321333133313331333133313233313331333131213232   >>