
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
Alexey drew 7 lines on a plane, which divided it into several regions. He then selected two neighboring regions (neighboring regions share a common side), counted how many sides each of them has, and added these two numbers together. What is the maximum sum he could obtain? Explain the answer.

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