The point is: I bought 10 yuntong Fepo cells for testing and I wasn't quite sure how to wire them and the image on the RC calculator page confused me.
I have to make a 2S2P and a 3S2P pack because my ESC is wired for a 2-Pack configuration and I think keeping them in 2 pieces could come in handy if I get another smaller RC vehicle that runs with one pack.