Help with Replicas in Thread Shed project

Hello friends, I am on the Thread Shed project on Python 3 Lists. I have done the project appropriately, however, my list keeps generating every data point times 4. I have 4 replicas of everything. I followed the video and I can’t figure out why. I have posted a picture of my code

If you write out your data at different points in time you can narrow down when you duplicate it

Using smaller amounts of data will make it easier to look at manually.

And if it is indeed 4 times, then that narrows down the possible causes quite a bit.

For smaller amounts of code you can also read it and consider what’s being done while comparing to what should be done at that point.