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Switch content in collection list

Hello.
Is there a way to switch the CMS content in a collection list?
Image left in the even rows and right in the odd rows? See picture?


Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Anyone have a smart idea how to solve this?

I would play around with adding a Switch or Number field to my cms. After which I could sort by that in my blog postings.