To mean one letter, such as ‘a’ or ‘G’, you can use [A-z].
I.g. if you want find any occurrence of strings such as 7956A, 5476H, 3865V, you can use
\d\d\d\d[A-z] a thoughtful use of digital
To mean one letter, such as ‘a’ or ‘G’, you can use [A-z].
I.g. if you want find any occurrence of strings such as 7956A, 5476H, 3865V, you can use
\d\d\d\d[A-z]