You are given a code:

def main_solution(x):
    return func_20(('giiq' + 'qpemes'), func_15('dvzw'))

Can you predict the output of `main_solution("bgfsmnufda")` 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": "bgfsmnufda"}, "ref_output": "g\u00abidi\u00bbq\u00abqvp\u00bbe\u00abmze\u00bbs\u00abw\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('giiq' + 'qpemes'), func_15('dvzw'))", "funcname": "main_solution"}
rule