To add a little detail to Seanibu's post, the Zayak rule was named after Elaine Zayak, who could do a triple toe loop so well that she put a gang of them in her program, one after another, but no other triple jumps. Since this gave her way more total triple jumps than anyone else could do, the judges were in a quandary. Did Zayak deserve to win because she did more triples than anyone else, or should they let someone else win who wasn’t nearly as athletic but presented a more balanced program with a greater variety of elements?
So they came up with “Zayak rules” that limit the number of times you can repeat the same jump. There have been different variations, but the rule now is:
1. Only two different jumps can be repeated in your program.
2. If you do the same jump twice, one of the two times must be in a combination or sequence.
3. You cannot repeat any jump more than twice.
So, for instance, if your first four jumping passes are 3Lz, 3L+2T, 3F, 3F+2Lo, now you are “Zayaked out.” You have repeated two triple jumps, the Lutz and the flip, so you cannot do any more of these jumps and you cannot repeat any other jump.
So now you have to go something like 3S, 3Lo, 3T for your last three jumping passes.
BTW, if you don’t have a triple Axel but do want to do a triple-triple (ladies) it becomes kind of a problem.
Let’s say you do 3Lz+3T, 3Lz, 3F+3T. Now you are in trouble. You have repeated two triple jumps, the Lutz and the toe, so you cannot do any more repeats. So now you have to do something like 3S+2Lo, 3Lo, 2A and you still have one jumping pass to go.