
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
Marius is entering a wildlife photo contest with his nine snow leopards of different heights. If the three shortest leopards insist on being placed at the ends and the middle of the row, how many ways can he line up the leopards?

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