How to repeat sequences alongside single events?

Is there a shorter way to write this?

d1 $ s "rs bd rs bd rs bd cp"

I wish I could do something like this, but this is not the same thing.

d1 $ s "[rs bd]!3 cp"

This example was given in one of Alex McLean's worksheets. I wasn't sure if it was a trick question.

Yes sorry, you need an additional operator for this. See the discussion here: