You are given a code:

def main_solution(x):
    return func_13(('bafxr' + x), '-')

Can you predict the output of `main_solution("fneciqhmyu")` 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": "fneciqhmyu"}, "ref_output": "b-a-f-x-r-f-n-e-c-i-q-h-m-y-u", "ref_code": "def main_solution(x):\n    return func_13(('bafxr' + x), '-')", "funcname": "main_solution"}
rule