New movie clip underneath existing one

Hello,

I’d like to know if it is possible to create a movie clip (duplicateMovieClip or createEmptyMovieClip) underneath an existing movie clip. For example, I have Square already drawn on the Stage. Then I create an empty movie clip, draw a circle in it, and I want to put it underneath the square. How? By the way, by underneath, I mean kind of like one piece of paper is underneath another when they are in a pile.

Thanks,
-Raven~Storm