You are given a code:

def main_solution(x):
    return func_17(('qvf' + 'fmcr'))

Can you predict the output of `main_solution("gemfqaglk")` 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": "gemfqaglk"}, "ref_output": "rcmffvq", "ref_code": "def main_solution(x):\n    return func_17(('qvf' + 'fmcr'))", "funcname": "main_solution"}
rule