{#  Loop through all items in a list, comma-separate them, but use "and" before the last item 
    e.g. ["apples", "bananas, "carrots] becomes "apples, bananas, and carrots" #}
{% macro to_sentence(items) %}
    {% for item in items %}

        {# First item #}
        {% if loop.first %}
            <span>{{ item }}{% if items|length > 2 %},{% endif %}</span>
        {% else %}

            {# Middle items #}
            {% if not loop.first and not loop.last %}
                <span>{{ item }}, </span>
            {% endif %}

            {# Last item #}
            {% if loop.last %}
                <span> and {{ item }}</span>
            {% endif %}

        {% endif %}

    {% endfor %}
{% endmacro %}