
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
Joana wrote a sequence in 10 lines using the digits from 0 to 9, following the pattern below.

$$
\begin{array}{lllllllllll}
0 & & & & & & & & & \\
1 & 1 & 0 & & & & & & & \\
2 & 2 & 2 & 1 & 1 & 0 & & & & \\
3 & 3 & 3 & 3 & 2 & 2 & 2 & 1 & 1 & 0
\end{array}
$$

What was the most used digit? How many times was this digit used?

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