You are given a code:

def main_solution(x):
    return func_9(func_15('dnxs'))

Can you predict the output of `main_solution("qqxnubuety")` 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": "qqxnubuety"}, "ref_output": "\u00abd\u00bb\u00abn\u00bb\u00abx\u00bb\u00abs\u00bb\u00bbs\u00ab\u00bbx\u00ab\u00bbn\u00ab\u00bbd\u00ab", "ref_code": "def main_solution(x):\n    return func_9(func_15('dnxs'))", "funcname": "main_solution"}
rule