You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'dex'), func_15('qvgwx'))

Can you predict the output of `main_solution("cugmcdkiwk")` 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": "cugmcdkiwk"}, "ref_output": "d\u00abeqx\u00bbc\u00abuvg\u00bbm\u00abcgd\u00bbk\u00abiww\u00bbk\u00abx\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'dex'), func_15('qvgwx'))", "funcname": "main_solution"}
rule