system-uicons/src/images/icons/hierarchy.svg

<svg height="21" viewBox="0 0 21 21" width="21" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" transform="translate(2 2)"><path d="m5.5.5h6v5h-6z"/><path d="m10.5 11.5h6v5h-6z"/><path d="m.5 11.5h6v5h-6z"/><path d="m3.498 11.5v-3h10v3"/><path d="m8.5 8.5v-3"/></g></svg>