Boy! The things I learn at the Royal Enfield motorcycle web site!
Here I've been calling those letters "Those GD impossible to read drawings of letters."
Now I know they are Captcha so I can now sound very educated by saying, "Those GD impossible to read Captcha letters."
Anyway, if the OP was asking if I could see "Those GD....." , yes, I see them. Don't ask me to tell you what they are though.