4-circle Venn diagrams are problematic because they don’t include the intersections of opposite circles without also including one of the other two circles (in this example there’s no AC or BD)
The problem only gets worse with more circles.
You could solve this problem by using different shapes, like ovals
I am Silver Tongue, I am an artist. I have many characters and you can check out my art in the art tag. I occasionally practice witchcraft though I don't do anything too complicated. I am girl 2 and don't know what else to put here.