You are given a code:

def main_solution(x):
    return (('ahcx' + 'yvh') + func_5('plvapw', 'bcx'))

Can you predict the output of `main_solution("blmuzn")` 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": "blmuzn"}, "ref_output": "ahcxyvhbcxplvapw", "ref_code": "def main_solution(x):\n    return (('ahcx' + 'yvh') + func_5('plvapw', 'bcx'))", "funcname": "main_solution"}
rule