
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
Given Professor Miller has nine different language books on a bookshelf: two Arabic, three German, and four Spanish, calculate the number of ways to arrange the nine books on the shelf keeping all German books together and all Spanish books also together.

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