You are given a code:

def main_solution(x):
    return func_20('chg', 'doiq')

Can you predict the output of `main_solution("nksyrcvy")` 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": "nksyrcvy"}, "ref_output": "cdhogiq", "ref_code": "def main_solution(x):\n    return func_20('chg', 'doiq')", "funcname": "main_solution"}
rule