C1311213331333132332133313331333133313121111331333133313233132311   >>    C131121333133313233213331333133313331312111133133313331323313231   <<    C1311213331333132332133313331333133313121111331333133313233132313   >>      C1311213331333132332133313331333133313121111331333133313233132312   >>