Capturing a repeated group

Question

I am attempting to parse a string like the following using a .NET regular expression:

H3Y5NC8E-TGA5B6SB-2NVAQ4E0

and return the following u

Answer 1

BTW, you can replace [ABCDEFGHJKLMNPQRSTVXYZ0123456789] character class with a more readable subtracted character class.

[[A-Z\d]-[IOUW]]

If you just want to match 3 groups like that, why don't you use this pattern 3 times in your regex and just use captured 1, 2, 3 subgroups to form the new string?

([[A-Z\d]-[IOUW]]){8}-([[A-Z\d]-[IOUW]]){8}-([[A-Z\d]-[IOUW]]){8}

In PHP I would return (I don't know .NET)

return "$1 $2 $3";