
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 combination lock has a total of nine buttons, comprising eight trigrams and the Taiji symbol. Four buttons need to be pressed in sequence (each button can only be pressed once). If the sequence matches the correct combination, the lock opens; otherwise, it resets to the initial state. It is known that no two opposite trigram buttons (e.g., Qian and Kun, or Brother and Gen) can be pressed consecutively before pressing the Taiji button. Given that there is only one correct sequence, how many tries at most are needed to open the lock?

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