Kanban

<svg class="bi bi-kanban" width="1em" height="1em" viewBox="0 0 16 16" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
  <path fill-rule="evenodd" d="M13.5 1h-11a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h11a1 1 0 0 0 1-1V2a1 1 0 0 0-1-1zm-11-1a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h11a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2h-11z"/>
  <rect width="3" height="5" x="6.5" y="2" rx="1"/>
  <rect width="3" height="9" x="2.5" y="2" rx="1"/>
  <rect width="3" height="12" x="10.5" y="2" rx="1"/>
</svg>