
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
The New Year's Eve performance includes four acts: singing, dancing, acrobatics, and skits. If the requirements are that singing is not in the 4th position, dancing is not in the 3rd position, acrobatics are not in the 2nd position, and skits are not in the 1st position, then how many different arrangements of the program are there that satisfy the above requirements?

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