You are given a code:

def main_solution(x):
    return func_5(func_13('qmd', '-'), 'hnyu')

Can you predict the output of `main_solution("qpijehyn")` 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": "qpijehyn"}, "ref_output": "hnyuq-m-d", "ref_code": "def main_solution(x):\n    return func_5(func_13('qmd', '-'), 'hnyu')", "funcname": "main_solution"}
rule