You are given a code:

def main_solution(x):
    return func_20(('zzkhfj' + x), func_15('qhf'))

Can you predict the output of `main_solution("gzvowjvcqf")` 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": "gzvowjvcqf"}, "ref_output": "z\u00abzqk\u00bbh\u00abfhj\u00bbg\u00abzfv\u00bbowjvcqf", "ref_code": "def main_solution(x):\n    return func_20(('zzkhfj' + x), func_15('qhf'))", "funcname": "main_solution"}
rule