wow, it's so cool of you to post this for free. thanks

Hi,
Thanks so much for everything you've posted! I cannot seem to figure out #6. Even the diagram is not helping.

Thanks

In the second one on your setup, why is P first? Why not S/P?

thanks

I need some help understanding #12. is it just me or is that some sketchy wording?
Because, doesn't the interchangeability of G/F making it B, 2 choices?

can someone help explain #16? just tell me in a sentence, I dont need a big explanation. I dont understand what I'm not seeing.

thanks!

I could use some help understanding #22 and #19.
thanks so much.