You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'dsdw'), func_15('sdtub'))

Can you predict the output of `main_solution("flyaqxdkr")` 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": "flyaqxdkr"}, "ref_output": "d\u00abssd\u00bbw\u00abfdl\u00bby\u00abatq\u00bbx\u00abduk\u00bbr\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'dsdw'), func_15('sdtub'))", "funcname": "main_solution"}
rule