
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
In Rivertown, car plates each contain three symbols: two letters followed by a digit. The first letter is chosen from the set ${A, B, G, H, T}$, the second letter from ${E, I, O, U}$, and the digit from $0$ to $9$. 

To accommodate an increase in the number of cars, Rivertown decides to expand each set by adding new symbols. Rivertown adds two new letters and one new digit. These additional symbols can be added entirely to one set or distributed among the sets. Determine the largest number of ADDITIONAL car plates that can be made possible by the most advantageous distribution of these new symbols.

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