
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
A club consists of three chairpersons and some number of active members. Each year, the chairpersons step down, and every active member recruits three new members. Subsequently, three new chairpersons are selected from outside the club. Initially, the club has twenty-one members in total. How many members will the club have after four years?

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