C1111233131211111211113313331333133313331333133313331333133313221213113311   >>    C111123313121111121111331333133313331333133313331333133313331322121311331   <<    C1111233131211111211113313331333133313331333133313331333133313221213113313   >>      C1111233131211111211113313331333133313331333133313331333133313221213113312   >>