f="//en.wikipedia.org/wiki/Olivola" title="Olivola">Olivola</a></li>
<li><a href="//en.wikipedia.org/wiki/Orsara_Bormida" title="Orsara Bormida">Orsara Bormida</a></li>
<li><a href="//en.wikipedia.org/wiki/Ottiglio" title="Ottiglio">Ottiglio</a></li>
<li><a href="//en.wikipedia.org/wiki/Ovada" title="Ovada">Ovada</a></li>
<li><a href="//en.wikipedia.org/wiki/Oviglio" title="Oviglio">Oviglio</a></li>
<li><a href="//en.wikipedia.org/wiki/Ozzano_Monferrato" title="Ozzano Monferrato">Ozzano Monferrato</a></li>
