
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
At the Chinese Riddle Championship, three students from Ha San Middle School passed through various levels and finally won the silver award. After the competition, the organizers took a group photo with one teacher, two parents, and the three students together. If all six of them stand in a row, with the three students standing adjacent to each other and the teacher not standing at either end, there are __________ ways to arrange them (answer with a number).

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