
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
On December 26, 2015, the No. 1 subway line in Nanchang was opened for operation. Four students, A, B, C, and D, decided to take the subway to visit Bayi Square, Tengwang Pavilion, and Qiushui Square. Each person can only go to one place, and Bayi Square must have someone going. The number of different sightseeing plans is \_\_\_\_\_\_.

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