
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 visits a donut shop to buy exactly nine donuts. The shop has five different kinds of donuts, and Bill wants at least one of each kind. How many combinations can Bill choose to satisfy these conditions?

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