Different screen sizes? (landscape)

I want to make a separate landscape layout for each size of my original layout

I have activity_main.xml. I have adapted it to be able to fit multiple screen sizes:

Now, I want to create a landscape layout for each different screen size. The android docs and many (Many!) stack overflow pages suggest to do something like this to create a new landscape layout:

But after doing this, I create a landscape layout for all of the activity_main.xml's I need a separate landscape for the large activity_main, the small activity_main, the xlarge activity_main, and the normal activity_main. By doing the method described everywhere, I end up with this:

And because this covers all of the activity_main.xml's, I don't get the option to 'Create Landscape Variationon my other versions of myactivity_main.

So, how do I get separate landscape layouts for each already made variation of activity_main`?

Thanks so much,

Ruchir