
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
Two numbers were written down - the first and the second. The second number was added to the first to get the third number, the third number was added to the second to get the fourth number, and so on. The sum of the first six numbers is 2008. What is the fifth number?

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