You are given a code:

def main_solution(x):
    return ('nqt' + 'khgkwh')

Can you predict the output of `main_solution("inrfhevti")` 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": "inrfhevti"}, "ref_output": "nqtkhgkwh", "ref_code": "def main_solution(x):\n    return ('nqt' + 'khgkwh')", "funcname": "main_solution"}
rule