
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
As shown in the diagram, fill the six numbers from 1 to 6 into the circles in the diagram, so that the number in each circle is equal to the difference (larger number minus smaller number) of the numbers in the two adjacent circles below it. Of course, the numbers in the three circles at the bottom do not need to follow this rule (since these three circles do not have adjacent circles below them). What number(s) can be in the topmost circle? If there are multiple answers, list all of them.

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