
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 a 7-digit telephone number $d_{1}d_{2}d_{3}-d_{4}d_{5}d_{6}d_{7}$, find the number of different "memorable" telephone numbers where either the triplet $d_{1}d_{2}d_{3}$ is equal to the sequence $d_{4}d_{5}d_{6}$ or $d_{5}d_{6}d_{7}$.

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