
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
There is a type of number called a Taidu number. Starting from the third digit, each digit in the number is greater than or equal to the sum of the previous two digits. For example, 1235 and 269 are Taidu numbers. The largest Taidu number is $\qquad$ .

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