
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
A bag contains 60 colored balls, with 6 balls of each color. Blindly drawing balls from the bag, in order to ensure that there are three balls of the same color among the drawn balls, at least 21 balls need to be drawn.

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