Macros concerning shapes

Hi. I am currently working for a company which prints warning label for pharmaceutical companies. My employer draws the triangles for the warning labels in Corel draw one by one to fill up the page and reverses every second one to save paper. This is very tedious and time consuming process and he has tasked me with finding a way to automate this. 

I was wondering if there is any way to code macros to fill the page with the shape and to reverse every second one. I have been trying to find ways to code the macro to do this but have had no luck as I think I am out of my depth. If anyone knows how to automate this process with code and a macro it would be greatly appreciated. 

The sheets are usually 8-10 shapes across 

Thanks in advance 

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