You are given a code:

def main_solution(x):
    return func_20(('afacy' + x), func_15('ndt'))

Can you predict the output of `main_solution("qsnxk")` 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": "qsnxk"}, "ref_output": "a\u00abfna\u00bbc\u00abydq\u00bbs\u00abntx\u00bbk", "ref_code": "def main_solution(x):\n    return func_20(('afacy' + x), func_15('ndt'))", "funcname": "main_solution"}
rule