[Cst-1b] Prolog: 95-5-7

[Sapna Jethwa]

Trees in all shapes, forms, and languages are my least favourite thing.

I know you'll look at this question and think "how dumb is
she?!??!!?!?!?" but could someone give me some hints about 95-5-7? It's
probably really easy when you know how to do it but I've had a mental
block with it, especially as it's not even an ordered binary tree which
I can sometimes cope with...

...any help is much appreciated!!!!!!!!!!!!!

thanks

Sapna