Any easy way to generate some code for a script?

Or am I left to do these sort of things manually?

Like for example, I have this on line 22 of my script:

send ("{DOWN}{ENTER}")

then 25 lines later, on line 47 I have:

send ("{DOWN}{DOWN}{ENTER}")

again another 25 lines later, on line 72 I have:

send ("{DOWN}{DOWN}{DOWN}{ENTER}")

You get the idea.... basically adding another {down} each time. I need to do this for about 15-20 more times.

Is there a command in Autoit that you can direct me to, that tells it to add another key press automatically or something?