Sets of Cells to List All Possible Combinations

[haavio]

Hello all,

Hopefully I might get some love here.

I'm trying to figure out how to get a list of all possible combinations from a specific list of values. What I mean is this:

Say I have a combination of 9 specific letters/numbers with a few "unknown" values. I know digits 1-6 are "a1b2c3" but digits 8 and 9 may be any number between 1-5.

What I then need is list of all possible combinations such as:
a1b2c3111
a1b2c3112
a1b2c3121
a1b2c3211
a1b2c3122
etc

Might anyone be able to enlighten me?

 

[haavio]

Quick addition:

Position number 8-9 may not have the the same values. The 8th digit may is a number between "1-5" and the 9th digit is either a "D" or "F".

Thank you kindly in advance