
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
Commander Krel from Planet Verx has received 30 resumes for four specialized roles on his starship: Chief Science Officer, Head Engineer, Navigation Expert, and Communications Officer. Unfortunately, Commander Krel finds only 10 of these candidates appropriate for any role. Additionally, for the position of Chief Science Officer, only 4 of the suitable candidates have the specific scientific expertise required. In how many ways can Commander Krel staff his starship, considering these constraints?

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