Type underline

<svg class="bi bi-type-underline" width="1em" height="1em" viewBox="0 0 16 16" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
  <path d="M5.313 3.136h-1.23V9.54c0 2.105 1.47 3.623 3.917 3.623s3.917-1.518 3.917-3.623V3.136h-1.23v6.323c0 1.49-.978 2.57-2.687 2.57-1.709 0-2.687-1.08-2.687-2.57V3.136z"/>
  <path fill-rule="evenodd" d="M12.5 15h-9v-1h9v1z"/>
</svg>