You are given a code:

def main_solution(x):
    return func_20('qzmloi', 'jgonuf')

Can you predict the output of `main_solution("jsdrtu")` 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": "jsdrtu"}, "ref_output": "qjzgmolnouif", "ref_code": "def main_solution(x):\n    return func_20('qzmloi', 'jgonuf')", "funcname": "main_solution"}
rule