You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('sunvhs', 'upjks'))

Can you predict the output of `main_solution("bwqiwdx")` 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": "bwqiwdx"}, "ref_output": "\u00absbu\u00bbu\u00abpwn\u00bbj\u00abvqk\u00bbh\u00absis\u00bb\u00abw\u00bb\u00abd\u00bb\u00abx\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('sunvhs', 'upjks'))", "funcname": "main_solution"}
rule