
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 school arranges for Xiao Li and four other intern teachers to practice teaching in classes one, two, and three. Each class must have at least one teacher assigned, and Xiao Li must teach class one. How many different arrangement plans are there? (Answer with a number)

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