bootstrap-6-6-bricks.html.twig in Bootstrap Layouts 8.3

<div {{ attributes.addClass('row') }} >
  {{ title_suffix.contextual_links }}
  {% if content.top %}
  <div class="col-sm-12">
    {{ content.top }}
  </div>
  {% endif %}

  {% if content.upper_left %}
  <div class="col-sm-6">
    {{ content.upper_left }}
  </div>
  {% endif %}

  {% if content.upper_right %}
  <div class="col-sm-6">
    {{ content.upper_right }}
  </div>
  {% endif %}

  {% if content.middle %}
  <div class="col-sm-12">
    {{ content.middle }}
  </div>
  {% endif %}

  {% if content.lower_left %}
  <div class="col-sm-6">
    {{ content.lower_left }}
  </div>
  {% endif %}

  {% if content.lower_right %}
  <div class="col-sm-6">
    {{ content.lower_right }}
  </div>
  {% endif %}

  {% if content.bottom %}
  <div class="col-sm-12">
    {{ content.bottom }}
  </div>
  {% endif %}
</div>