
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
Murtha now decides to expand her pebble collection even faster. On the first day, she collects one pebble, on the second day she collects three pebbles, and each subsequent day she collects two more pebbles than the previous day. How many pebbles will she have collected at the end of the twelfth day?

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