You are given a code:

def main_solution(x):
    return func_17('lougvg')

Can you predict the output of `main_solution("vtcequg")` 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": "vtcequg"}, "ref_output": "gvguol", "ref_code": "def main_solution(x):\n    return func_17('lougvg')", "funcname": "main_solution"}
rule