Inheritance

I have 10 movieclips I wanted to create a class for because they all share similar functionality. However they each have their own unique functionality too. I tried making a class for them all as the base class. Then their own unique class each. Flash said “The Base class field will not be used because you have provided your won implementation for “uniqueClass”. If you wish to use the Base class field, please enter a name in the Class field that does not have an implementation file. Otherwise, leave the Base class field blank.” Is there any way around this?

So I want the uniqueClass’ to inherite the Base class for all 10 movieclips.

Thanks