So this goes a bit over my head so I am coming here in hopes for help and a solution.
I need a formula similiar to the one posted here:
www.mrexcel.com
However, I have some exceptions...
I do not want any duplicate letters in the combination (ex. Abc is ok, Aab is not)
The combination must contain a vowel (a,e,i,o,u,y)
Is this possible?
I need a formula similiar to the one posted here:

Every Three Letter Combination
Hi, Could anyone help me with a macro or formula that could list every three letter combination from AAA to ZZZ in column A of a workbook? Just the logic would be fine as I'm starting to think that the way I've thought of doing it is over complicating it. Thank you.
However, I have some exceptions...
I do not want any duplicate letters in the combination (ex. Abc is ok, Aab is not)
The combination must contain a vowel (a,e,i,o,u,y)
Is this possible?