
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
Xiao Wang and Xiao Li were both born in January of the same year, on different days, but both were born on a Sunday, and Xiao Wang was born earlier than Xiao Li. The sum of their birth dates is 30. What is the birth date of Xiao Li in January?

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