You are given a code:

def main_solution(x):
    return (func_5('hexlwq', 'sfn') + ('isw' + 'hcyip'))

Can you predict the output of `main_solution("ygyhvkh")` 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": "ygyhvkh"}, "ref_output": "sfnhexlwqiswhcyip", "ref_code": "def main_solution(x):\n    return (func_5('hexlwq', 'sfn') + ('isw' + 'hcyip'))", "funcname": "main_solution"}
rule