
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
Fill the squares labeled 1, 2, 3, and 4 with the numbers 1, 2, 3, and 4, with each square containing one number. How many ways are there to fill the squares so that the label of each square is different from the number it contains?

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