C1311213331333132332133313331333133313331333131133133312111113213123213311   >>    C131121333133313233213331333133313331333133313113313331211111321312321331   <<    C1311213331333132332133313331333133313331333131133133312111113213123213313   >>      C1311213331333132332133313331333133313331333131133133312111113213123213312   >>