You are given a code:

def main_solution(x):
    return func_20(func_1('vfaf', 3), func_15('theu'))

Can you predict the output of `main_solution("wsxi")` 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": "wsxi"}, "ref_output": "v\u00abfta\u00bbf\u00abvhf\u00bba\u00abfev\u00bbf\u00abauf\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_1('vfaf', 3), func_15('theu'))", "funcname": "main_solution"}
rule