>I remember there being something about certain forms being
>linked so that if you recieved something as a second tier form
>then it removed a certain other shape as the first tier form.
>Is there a list somewhere that shows it, or is that a secret
>info?

I don't believe there is a list, nor is it really secret information, more like common sense.

If you get turtle, you won't get armadillo, since the forms are basically identical.

So long, and thanks for all the fish!