I'm struggling with drawing the graph from the 8th step in page 61 of **Humphrey's book Introduction to Lie Algebra and Representation Theory.** Since they're not standard Dynkin diagrams, I can't find a way to draw it with package {dynkin-diagrams}. What are the simplest way to draw these graphs? Thanks for your help.
[![graph](https://i.stack.imgur.com/y0kcy.png)](https://i.stack.imgur.com/y0kcy.png)