
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
An oreo shop sells $7$ different flavors of oreos and $4$ different flavors of milk. Charlie and Delta decide to purchase some items. Charlie, who is picky, will not order more than 1 of the same flavor. Delta, on the other hand, will only order oreos but is open to having repeats of flavors. How many different ways could they have left the store with $4$ products collectively? (For example, Charlie chooses 1 pack of vanilla oreos and 1 bottle of almond milk while Delta picks 2 packs of chocolate oreos).

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