
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Distribute $5$ different books to $4$ students, where books A and B cannot be given to the same student at the same time. Each student receives a book, and each book can only be given to one student. The number of different distribution schemes is ______. (Enter the answer as a number)

Present the answer in LaTex format: \boxed{Your answer}
user