[Logic]

I want to make a clock arm that stops at 3 different places (out of 36 total on the clock) at random and repeats those three positions in the same order after the random calculation, until told to stop & then generates another three positions the next time it's used.

How would/should I go about doing this?

(PS: I'm very new to logic and everything but it seems like something I could enjoy diving into come the release of the game)