.. Cuckoo clock

You would have to know the correct sequence.

I think you find hints in the office. ( Check out the desk. )

Read the piece of paper on the desk.

Yes, it goes like this:

Cuckoo, cuckoo, what do you do? I sing the five rules.
I never coo-coo more than Three times.
If you hear the First cuckoo of spring, it is good luck.
Only Two cuckoo species make my sound.
Survival is my stronges point. It always comes First.
By the end of the Second half of summer, I have laid all of my eggs.
Finally, once you got the Flow, ask me the funniest thing, and I'll reward you with the Code.

There are three weights. Let me emphasize the memo:

Cuckoo, cuckoo, what do you do? I sing the five rules.
I never coo-coo more than Three times.
If you hear the First cuckoo of spring, it is good luck.
Only Two cuckoo species make my sound.
Survival is my stronges point. It always comes First.
By the end of the Second half of summer, I have laid all of my eggs.
Finally, once you got the Flow, ask me the funniest thing, and I'll reward you with the Code.

Pull the weights in this order: Right, Left, Middle, Left, Middle

Finally, once you got the Flow, ask me the funniest thing, and I'll reward you with the Code.

Jokes are funny.

Why do mummies like Christmas so much?