Generate SamAccount

Hello @All

I´am really new in scripting. I have have a Script that import User from a CSV file to our AD. The worst thing is that we have a name convention for the SamAccountname. there should be 6 letters from the lastname and two from the firstname. If the lastname has less than 6 letters it should use letters from the Frist name to reach 8 letters.

Can anywone help me?

Best regards