
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 a $2 \times 4$ grid with the first eight positive integers, one number per cell, such that in each row the numbers increase from left to right and in each column the numbers increase from bottom to top. How many different ways can this be done?

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