
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
A courier delivers packages to 12 offices in a business park. To ensure efficiency, the courier doesn't always deliver to every office, but to maintain reliability, they never miss delivering to four consecutive offices. Compute the number of ways the courier could achieve this delivery pattern.

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