You are given a code:

def main_solution(x):
    return func_20(func_15('hldu'), func_5(x, 'whh'))

Can you predict the output of `main_solution("mncazqgbl")` 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": "mncazqgbl"}, "ref_output": "\u00abwhh\u00bbh\u00abmln\u00bbc\u00abadz\u00bbq\u00abgub\u00bbl", "ref_code": "def main_solution(x):\n    return func_20(func_15('hldu'), func_5(x, 'whh'))", "funcname": "main_solution"}
rule