You are given a code:

def main_solution(x):
    return func_20(func_15('fcflvg'), func_20(x, 'tmswcb'))

Can you predict the output of `main_solution("afdwv")` 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": "afdwv"}, "ref_output": "\u00abaft\u00bbf\u00abmcd\u00bbs\u00abwfw\u00bbv\u00abclb\u00bb\u00abv\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('fcflvg'), func_20(x, 'tmswcb'))", "funcname": "main_solution"}
rule