How can I list every data combination from a large pivot table?
 

I've got 125 line items (text) I need to multiply out and show every
combination in 2 columns (15625 possible line item combinations). In
addition, I will need to run formulas for each row so Merged Cells do not
work. My closest attempt with reference data arrays and lookup functions
could work, but I will need to c/p too much. I'd like to just fill-down my
formulas.

How can I list every data combination from a large pivot table?
 

Use reverse Pivot Table.
No formulas needed:
http://www.freefilehosting.net/download/3g555