You are given a code:

def main_solution(x):
    return func_20('ksjan', 'sufjb')

Can you predict the output of `main_solution("qnyuet")` 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": "qnyuet"}, "ref_output": "kssujfajnb", "ref_code": "def main_solution(x):\n    return func_20('ksjan', 'sufjb')", "funcname": "main_solution"}
rule