I would like to ask here for help in implementing the following idea.

I need a virtual Rubik's cube n*n which instead of color stickers would have white stickers with arbitrary symbols (letters or digits) written on them that would rotate together with the cubelets.

As a starting point, I would like to take this Rubik's Cube demo

https://demonstrations.wolfram.com/RubiksCube/

or this example:

https://community.wolfram.com/groups/-/m/t/1659434

I am struggling with replacing the color stickers with a list of symbols in arbitrary orientation, which is mainly due to my lack of experience with the graphics routines in Mathematica. Could anyone suggest an efficient way of coding it?

Thanks.