
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
By analogy with the property in the plane that "two lines perpendicular to the same line are parallel to each other", the following conclusions can be drawn in space: ① Two lines perpendicular to the same line are parallel to each other; ② Two lines perpendicular to the same plane are parallel to each other; ③ Two planes perpendicular to the same line are parallel to each other; ④ Two planes perpendicular to the same plane are parallel to each other. The correct conclusions are

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