I am trying to return a number (1-9) for a letter.

For instance:

A B C D

A J S 1
B K T 2
C L U 3
D M V 4
E N W 5
F O X 6
G P Y 7
H Q Z 8
I R 9

I can do the first column, but when I try the second or third columns, I get
an error value. So how can I type in a W and get it to return a 5, an I to
return a 9, and so on?