{% for row in grid.widgets %}
  <div class="row">
    {% set layout = grid.layout[loop.index0] %}
    {% for col in row %}
      <div class="col-{{ layout[loop.index0] }}">
        {% for widget in col %}
          {{ include(widget) }}
        {% endfor %}
      </div>
    {% endfor %}
  </div>
{% endfor %}