You are given a code:

def main_solution(x):
    return func_20('drpje', 'kkvwej')

Can you predict the output of `main_solution("sekmk")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "sekmk"}, "ref_output": "dkrkpvjweej", "ref_code": "def main_solution(x):\n    return func_20('drpje', 'kkvwej')", "funcname": "main_solution"}
rule