You are given a code:

def main_solution(x):
    return func_20(func_4(x), func_15('puci'))

Can you predict the output of `main_solution("daqkxwpbwm")` 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": "daqkxwpbwm"}, "ref_output": "d\u00abapq\u00bbk\u00abxuw\u00bbp\u00abbcw\u00bbm\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_4(x), func_15('puci'))", "funcname": "main_solution"}
rule