
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 high school uses a systematic sampling method to select 50 students from a total of 800 students in the first grade for a dental health check-up. The students are numbered from 1 to 800. It is known that the number drawn from the 16 numbers between 33 and 48 is 39. The number drawn from the first group (1 to 16) is _______.

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