
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 bakery to purchase exactly eight donuts. The bakery has five kinds of donuts, and Bill must get at least one of each kind, except one kind which he can skip. How many combinations will satisfy Bill's order requirements?

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