SICP

I'm having trouble visualizing the processed produced by the examples provided in exercise 1.9.

In case you've forgotten or are not familiar I've included the problem: http://pastebin.com/7PYmxrSS

Whenever I expand these recursive procedures I always end up getting an iterative process, so I don't believe I'm doing it correctly.
Any tips or tricks to help would be greatly appreciated.

>>3
helps

>>2,4
Show off their cudders by just answering the question directly.

Terrible!