You are given a code:

def main_solution(x):
    return func_20(func_5('zloul', 'snv'), func_15('zxsws'))

Can you predict the output of `main_solution("fhykvxfu")` 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": "fhykvxfu"}, "ref_output": "s\u00abnzv\u00bbz\u00ablxo\u00bbu\u00abls\u00bb\u00abw\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5('zloul', 'snv'), func_15('zxsws'))", "funcname": "main_solution"}
rule