
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
Given that the center of the circle is $O$, $AB \perp BC$, and $AB$ has a length of three times the circle's radius, and the line $ADOE$ is straight with $AP = AD$ and $DF = DO$, find the relation among $AP, PB, AB, \text{ and } DF$.

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