You are given a code:

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

Can you predict the output of `main_solution("qljc")` 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": "qljc"}, "ref_output": "n-e-d-f-u-h-w-d", "ref_code": "def main_solution(x):\n    return func_13(('nedf' + 'uhwd'), '-')", "funcname": "main_solution"}
rule