
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
Mr. and Mrs. Lopez, along with their two children and two grandparents, are traveling in a minivan that has one driver's seat, three seats in the middle row, and two seats in the back row. Either Mr. Lopez, Mrs. Lopez, one of the grandparents, or the other grandparent must sit in the driver's seat. How many seating arrangements are possible?

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