C1311213331333132332133313331333133313331333133313331333131211113313231232311   >>    C131121333133313233213331333133313331333133313331333133313121111331323123231   <<    C1311213331333132332133313331333133313331333133313331333131211113313231232313   >>      C1311213331333132332133313331333133313331333133313331333131211113313231232312   >>