
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
Among the statements below:  
① Two vectors with a common starting point and equal magnitudes always have the same endpoint;  
② If $|\overrightarrow{a}| = |\overrightarrow{b}|$, then $\overrightarrow{a} = \overrightarrow{b}$;  
③ If non-zero vectors $\overrightarrow{a}$ and $\overrightarrow{b}$ are collinear, then $\overrightarrow{a} = \overrightarrow{b}$;  
④ If vectors $\overrightarrow{a} = \overrightarrow{b}$, then vectors $\overrightarrow{a}$ and $\overrightarrow{b}$ are collinear;  
⑤ Since the direction of the zero vector is not defined, it cannot be parallel to any vector;  
The correct statement(s) is/are __________.

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