tabs-extended-placeholders.cshtml

<div class="tabs-container">
	<ul>
		@foreach (var tab in Model.TabItems) 
		{
			<li>@tab.Title</li>
		}
	</ul>
	@foreach (var tab in Model.TabItems)
	{
		<div>
			@Html.Sitecore().DynamicPlaceholder("tab", tab.ItemId)
		</div>
	}
</div>