[USER (data scientist)]:Now let's answer the fifth question. We want to find clients who are employed and preferably have stable employment among the clients we filtered in the first step. We can consider stable employment as those with employment durations of 4 years or more. Please provide the result type as a list of client IDs with stable employment. 
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd  
import pickle 
from decision_company import read_csv_file, logical_and, logical_or, filter_by_condition, count_rows, fetch_index, convert_to_list, fetch_column

# Load the dataset  
credit_customers = read_csv_file("credit_customers.csv")  

# YOUR SOLUTION BEGIN:
<code1>
[GENERATE YOUR CODE]
</code1>
# YOUR SOLUTION END

print(result_list)

# save data
pickle.dump(result_list,open("./pred_result/result_list_4.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: Sure, I can help you with that.

# MY SOLUTION BEGIN:
