I have 6 unique modules that need to be placed in a 3x3 grid. Each arrangement should use all 6 modules, leaving exactly 3 positions as empty (voids). I want to know the total number of possible unique combinations that can be generated with this setup, ensuring that each configuration has 6 modules and 3 empty spots. How can I make this ? I tried with two list. Can anyone help with this. I need all the results.
