A problem in hitTest

Hi, All.
I am trying to make a venn diagram using hitTest. It consists of four parts - even number(A), the number divisible by 3(B), A and B, not (A or B)

It will show the results (correct or wrong) when the draggable numbers find right spots. But, it works even when I put some numbers into the wrong places.

Can anybody help me find a problem?

Please see attached. (Flash MX. swf file)
(doesn’t allow fla file because it’s 1 kb larger…-_-)