You are given a code:

def main_solution(x):
    return func_20('zrwtpt', x)

Can you predict the output of `main_solution("fahgzezz")` 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": "fahgzezz"}, "ref_output": "zfrawhtgpztezz", "ref_code": "def main_solution(x):\n    return func_20('zrwtpt', x)", "funcname": "main_solution"}
rule