You are given a code:

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

Can you predict the output of `main_solution("ywyhzsl")` 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": "ywyhzsl"}, "ref_output": "y\u00abwby\u00bbh\u00abzms\u00bbl\u00ablxs\u00bbz\u00abhay\u00bbw\u00abyw\u00bb\u00abf\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('bmxawf'))", "funcname": "main_solution"}
rule