
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 are \( h + s \) lines on a plane, where \( h \) lines are horizontal lines, and the remaining \( s \) lines satisfy:
(1) They are not horizontal lines;
(2) No two of them are parallel;
(3) Any 3 lines among the \( h + s \) lines do not intersect at a single point, and these \( h + s \) lines exactly divide the plane into 1992 regions. Find all positive integer pairs \((h, s)\).

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