You are given a code:

def main_solution(x):
    return func_5(x, 'nhv')

Can you predict the output of `main_solution("iwrwtq")` 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": "iwrwtq"}, "ref_output": "nhviwrwtq", "ref_code": "def main_solution(x):\n    return func_5(x, 'nhv')", "funcname": "main_solution"}
rule