You are given a code:

def main_solution(x):
    return func_20(func_20('hhbrp', 'ihcsz'), func_15('boyp'))

Can you predict the output of `main_solution("mecqvytzf")` 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": "mecqvytzf"}, "ref_output": "h\u00abibh\u00bbh\u00abboc\u00bbr\u00absyp\u00bbz\u00abp\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('hhbrp', 'ihcsz'), func_15('boyp'))", "funcname": "main_solution"}
rule