Page lists & mixed areas/blocks

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Hi!

I'm new to concrete5, and I'm trying to create a simple news site with a flow of news stories. One way to do this is by using a page list, sorted by latest first. The problem I'm facing is that I would like to interrupt the stories once in a while with an ad or an image slideshow. Like this:

Story1
Story2
Slideshow
Story3
Story4

With the slideshow block always on position three from top. How can I solve this? Is it possible to have two page list blocks, one starting at the story after where the first page list block one ended?

Thanks.