Pivot Table Item that fits in multiple categories

[shadydeals]

I have data categorized into three groups, call them A, B, and C. My problem is that some items appear in two groups (which I want them to), but I am having trouble getting both to show up in the pivot table.

The pivot table is sorted like this:
A... data in A
<list of="" names="">
B... data in B
<list of="" names="">
C... data in C
<list of="" names="">

How can I organize the raw data so a name can appear in both?

Thanks for any help.</list></list></list>