You are given a code:

def main_solution(x):
    return func_20(func_15('mwmqo'), ('bpbrf' + x))

Can you predict the output of `main_solution("efquesovh")` 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": "efquesovh"}, "ref_output": "\u00abbmp\u00bbb\u00abrwf\u00bbe\u00abfmq\u00bbu\u00abeqs\u00bbo\u00abvoh\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('mwmqo'), ('bpbrf' + x))", "funcname": "main_solution"}
rule