choosealicense.com/_includes/using-sentence.html

{% assign id = "/licenses/" | append: include.license-id %}
{% assign licenses = site.licenses | where:"id", id %}
{% for license in licenses %}
  {% assign using = license.using %}
  {% if using.size > 0 %}
    {% for used in using limit: 3 %}
      {% assign last = forloop.last %}
      {% if last and using.size > 1 %}
        and
      {% endif %}
      <a href="{{ used[1] }}">{{ used[0] }}</a>{% if last == false %},{% endif %}
    {% endfor %}
    use{% if using.size == 1 %}s{% endif %} the {% if license.nickname %}{{ license.nickname }}{% else %}{{ license.title }}{% endif %}.
  {% endif %}
{% endfor %}