
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
A bus company has 15 buses in its parking lot. Starting from 6 a.m., the first bus departs, and thereafter, a bus departs every 6 minutes. Three minutes after the first bus departs, a bus enters the parking lot, and thereafter, a bus enters every 8 minutes. The buses that enter park behind the original 15 buses and then depart in turn. When will the parking lot be empty for the first time?

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