
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
Start solving the problem by selecting digits that squares of numbers can end with. Bear in mind that 6 is a tricky digit and there are no repeated digits except for the digit 3. Determine the units digit of the four-digit number by trial (considering the available digits), and then determine the two-digit number.

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