It is important to note that the commandments are not only altered over time, but eventually abandoned completely and replaced by a single maxim: All animals are equal, but some are more equal than others.
The rules that Old Major passed down are corrupted and rejected one by one until they are replaced by a justification of totalitarianism.
THE SEVEN COMMANDMENTS
1. Whatever goes upon two legs is an enemy.
2. Whatever goes upon four legs, or has wings, is a friend.
3. No animal shall wear clothes.
4. No animal shall sleep in a bed.
5. No animal shall drink alcohol.
6. No animal shall kill any other animal.
7. All animals are equal.
The seven commandments are listed above; these were copied from enotes summary of Chapter 2. To differ with those of Post #3, Napoleon has some of the commandments altered later, not in Chapter 2. He usurps power in Chapter 5.
Now, the question asks for the nine vices, not the seven commandments. As Post #1 mentions, these are in Chapter 1 and enumerated by Old Major who instructs the animals to never adopt Man's ways even after they conquer him: "All the habits of Man are evil." Unfortunately, Napoleon does not heed the warnings of Old Major.
It's in Chapter 1, just before Old Major sings "Beasts of England" for the first time. Basically, they are just not supposed to do anything that is like what humans do. Everything that humans do is bad and so the animals are not supposed to engage in any of that. Here's the quote:
Even when you have conquered him, do not adopt his vices. No animal must ever live in a house, or sleep in a bed, or wear clothes, or drink alcohol, or smoke tobacco, or touch money, or engage in trade. All the habits of Man are evil. And, above all, no animal must ever tyrannise over his own kind. Weak or strong, clever or simple, we are all brothers. No animal must ever kill any other animal.
So, you've got 7 in the first sentence and then two more as you go.