Split similar letter -SQL query

Hi Experts,

I try to think logically to write this procedure but couldn't think one. I want to the split similar occurrence of the letter from a column. How to do it?

Sample example

column
aaa#!RRR@R 
R#!AR###!

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Required Output

OUTPUT
-aaa-#-RRR-@-R
-R-#-!-A-R-###-!

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