Make a unique list from all separated value across multiple cells

Apologies if this has been covered but I couldn't find anything.
I also apologise that on this occasion I have not even been able to get started.


I have a number of values in three columns that are separated consistently from each other.
I need to somehow create a list of all the possible combinations taking a value from each cell.

Is there a way of doing this with formulas or do I need to use VBA? Can it even be done with VBA?


Sample attached.