
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
Which of the following statements about the analytical method is correct? Fill in all the numbers you think are correct.  
① The method of reasoning from cause to effect;  
② The method of reasoning from effect to cause;  
③ The method of reasoning by distinguishing and mutually inferring cause and effect;  
④ The method of proving the converse statement.

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