C13112133313331323321333133313331333131211113313331333133313331313123311   >>    C1311213331333132332133313331333133313121111331333133313331333131312331   <<    C13112133313331323321333133313331333131211113313331333133313331313123313   >>      C13112133313331323321333133313331333131211113313331333133313331313123312   >>