You are given a code:

def main_solution(x):
    return func_20(func_1('vwxwyl', 4), func_15('nwj'))

Can you predict the output of `main_solution("wies")` 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": "wies"}, "ref_output": "v\u00abwnx\u00bbw\u00abywl\u00bbv\u00abwjx\u00bbwylvwxwylvwxwyl", "ref_code": "def main_solution(x):\n    return func_20(func_1('vwxwyl', 4), func_15('nwj'))", "funcname": "main_solution"}
rule