
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
From a group of 6 people, 4 individuals are to be selected to visit Paris, London, Sydney, and Moscow, with each city being visited by exactly one person, and each person visiting only one city. If among these 6 people, person A and person B cannot visit Paris, find the total number of different selection schemes.

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