Rotate a two-circle Venn diagram by 180 degrees (or a three-circle one by 120 degrees), and it looks the same. But the four-ellipse diagram doesn’t have rotational symmetry.

Four Circle Venn Diagram. October 18, 2022 | Clip Of Vice President Harris Joins "A Matter of Degrees" Climate Podcast This clip, title, and description were not created by C-SPAN. User Clip: Four ...

So, diagram the A/B premise and the B/C premise onto the three circles. If what comes out when we look at the A/C circles entails the representation of the form of the conclusion, BOOM, the ...