Find/Replace and format existing letters inside brackets

[Microlight]

Using the Find and replace in a large Word v2016 document, is it possible to change the formatting of everything in brackets ?, for example:

Note-Everything inside the brackets is bold font,

(C) Stran-(Am)ger (C) (Am), (C) stran-(Am)ger (C) (Am)
Yeah you can (G) see, the (F) look in her (G) eye

To look like this:

[C] Stran-[Am]ger [C] [Am], [C] stran-[Am]ger [C] [Am]
Yeah you can [G] see, the [F] look in her [G] eye

without having to find and replace every letter individually inside the brackets


is there a formula or wildcard way of doing it quickly and easily
I have hundred’s of these documents to edit and using wildcards, bold formatting I can find the characters using an “*” in the find box, but as yet haven’t found a way of easily replacing the text to be same but formatted differently, other than directly replacing the exact letter in the replace box for 1 character at a time?

Thanks in advance