
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
Wang Liang's grandfather is 80 years old this year (2012). This year, Wang Liang's age is exactly the sum of the digits of his birth year. How old could Wang Liang be this year?

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