
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
On the island of Numblar, the Numblarian alphabet consists of $7$ letters, and a valid word in the Numblarian language has no more than $4$ letters. Calculate how many words are possible if each letter can be reused in a word, but not having any letters does not count as a word.

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