
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
There are three shelves of books, with the top shelf having 10 different Chinese books, the middle shelf having 9 different math books, and the bottom shelf having 8 different English books. Calculate the total number of different ways to take two books of different subjects from the shelves.

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