
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 tasked with purchasing exactly seven donuts. The shop offers five different types of donuts, and he must buy at least one of each kind for four out of the five types. How many combinations will satisfy Bill’s order requirements?

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