In a 3-by-3-by-3 lattice there are 27 cubes of equal size - a central cube surrounded by 26 neighbors. Assign the 26 letters of the alphabet to these cubes according to the following diagram.
Eckler, A. Ross
Word Ways: Vol. 26
, Article 2.
Available at: https://digitalcommons.butler.edu/wordways/vol26/iss3/2