
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
An expanded ancient tribe now has 15 members and a more complex hierarchical system. The hierarchy consists of one chief, two supporting chiefs (A and B), each with two inferior officers. Now, each inferior officer also has one assistant. How many different ways can we choose the leadership and their immediate support members of the tribe considering this new structure?

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