{% for caption, url in date_hierarchy.back_urls %}
    <a class="date-hierarchy--back-url" href="{{ url }}">{{ caption }}</a>
{% endfor %}
{% if date_hierarchy.choice_urls %}
    {% for caption, url in date_hierarchy.choice_urls %}
        <a class="date-hierarchy--choice" href="{{ url }}">{{ caption }}</a>
    {% endfor %}
{% endif %}