You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('zwirw', 'kug'))

Can you predict the output of `main_solution("qwl")` 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": "qwl"}, "ref_output": "\u00abzqk\u00bbw\u00abuwi\u00bbg\u00abrlw\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('zwirw', 'kug'))", "funcname": "main_solution"}
rule