
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
I have 7 books, two pairs of which are identical. The first pair consists of two identical math books, and the second pair consists of two identical science books. The remaining three books are all different. In how many ways can I arrange these books on a shelf?

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