
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
In the country of Limonia, coins with denominations of $3n-1, 6n+1, 6n+4$, and $6n+7$ piastres are in circulation, where $n$ is a natural number. A resident of the country went to the bank without any cash. What is the largest amount of money the bank will not be able to provide him?

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