You are given a code:

def main_solution(x):
    return func_20(func_3('xsnyx'), func_17('bwdbg'))

Can you predict the output of `main_solution("fbwmw")` 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": "fbwmw"}, "ref_output": "ngsbxdxwyb", "ref_code": "def main_solution(x):\n    return func_20(func_3('xsnyx'), func_17('bwdbg'))", "funcname": "main_solution"}
rule