
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
Bill is sent to a newly opened donut shop to purchase exactly eight donuts. The shop offers five different kinds of donuts. If Bill must buy at least one of each kind, how many different combinations of donuts can Bill purchase?

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