C111123313121111121111331333133313331322121111331333133313331333223313113311   >>    C11112331312111112111133133313331333132212111133133313331333133322331311331   <<    C111123313121111121111331333133313331322121111331333133313331333223313113313   >>      C111123313121111121111331333133313331322121111331333133313331333223313113312   >>