
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
Select 3 teachers from 5 male teachers and 4 female teachers to be assigned as class teachers for 3 classes (1 class teacher per class), with the requirement that among these 3 class teachers, there must be both male and female teachers. The total number of different assignment schemes is \_\_\_\_\_\_ . (Answer with a number)

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