
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
A zoo has six pairs of different animals, each consisting of one male and one female. The zookeeper decides to feed the animals, ensuring that each time he feeds a single animal, the next one he feeds must be of the opposite gender. He begins by feeding the male lion. How many ways can he feed all the animals?

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