You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'mqmmsb'), func_15('fqna'))

Can you predict the output of `main_solution("ehzrdl")` 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": "ehzrdl"}, "ref_output": "e\u00abmfh\u00bbq\u00abzqm\u00bbr\u00abmnd\u00bbs\u00ablab\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'mqmmsb'), func_15('fqna'))", "funcname": "main_solution"}
rule