
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
Lina has a four-digit security code that uses the digits 9, 8, 7, and 6, but she cannot remember the order of these digits. How many different combinations can she try to correctly enter her security code?

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