You are given a code:

def main_solution(x):
    return func_20(func_15('qkwgub'), func_3(x))

Can you predict the output of `main_solution("apleecfpu")` 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": "apleecfpu"}, "ref_output": "\u00abaqc\u00bbe\u00abekf\u00bbl\u00abpwp\u00bbu\u00abg\u00bb\u00abu\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('qkwgub'), func_3(x))", "funcname": "main_solution"}
rule