
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
Pengzhou Middle School plans to arrange a class schedule for a new class of Grade 10, which includes one session each of Chinese, Mathematics, Foreign Language, Physics, Chemistry, and Biology, totaling 6 sessions. The requirements are that Chinese and Foreign Language must be scheduled in the first three sessions, Biology must be in the last two sessions, and Physics and Chemistry cannot be adjacent. Calculate the total number of different arrangements.

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