
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
In a city, there are 9 bus stops and several buses. Any two buses share at most one common bus stop. Each bus has exactly three bus stops. What is the maximum number of buses that can be in the city?

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