
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 preparation for the 2010 Shanghai World Expo, the organizing committee needs to select four volunteers from among Zhang, Liu, Li, Song, and Wang to perform four different tasks: translation, tour guiding, etiquette, and driving. If Zhang and Zhao can only work in the first two roles, while the other three can work in any of the four roles, how many different assignment plans are there?

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