You are given a code:

def main_solution(x):
    return func_20(func_5('olpvow', 'grih'), func_3('zzl'))

Can you predict the output of `main_solution("oytywgohu")` 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": "oytywgohu"}, "ref_output": "glrzizholpvow", "ref_code": "def main_solution(x):\n    return func_20(func_5('olpvow', 'grih'), func_3('zzl'))", "funcname": "main_solution"}
rule