You are given a code:

def main_solution(x):
    return func_20(func_9(x), func_15('twud'))

Can you predict the output of `main_solution("wiaylhmsm")` 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": "wiaylhmsm"}, "ref_output": "w\u00abita\u00bby\u00ablwh\u00bbm\u00absum\u00bbm\u00absdm\u00bbhlyaiw", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('twud'))", "funcname": "main_solution"}
rule