But if you intend to use this a lot, why not make your own cheat guide.
in A1 put =1
In A2 put =A1 + 1
drag that down to A25
In B1 put =CHAR(A1)
drag that down to B25
Copy both A and B columns over to D & E
Change D1 from 1 to =A25 + 1
reselect that whole column and repeat in G-H, J-K, M-N, P-Q, S-T, V-W, Y-X, AB-AC, AE-AF
You can even overwrite the ones that are hard to tell what they are by referencing the website and changing things like the actual space character to (space)...