You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'mzcw'), func_15('izoe'))

Can you predict the output of `main_solution("qcxzpvf")` 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": "qcxzpvf"}, "ref_output": "m\u00abzic\u00bbw\u00abqzc\u00bbx\u00abzop\u00bbv\u00abfe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'mzcw'), func_15('izoe'))", "funcname": "main_solution"}
rule