<ul class="grid row3 clients"> <li><img src="image path" alt="" /></li> </ul>
<ul class="grid row4 clients"> <li><img src="image path" alt="" /></li> </ul>
<ul class="grid row5 clients"> <li><img src="image path" alt="" /></li> </ul>
<ul class="grid row6 clients"> <li><img src="image path" alt="" /></li> </ul>