You are given a code:

def main_solution(x):
    return func_20(func_9('aqdtoc'), func_15('okqph'))

Can you predict the output of `main_solution("ybkhjgqbar")` 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": "ybkhjgqbar"}, "ref_output": "a\u00abqod\u00bbt\u00abokc\u00bbc\u00aboqt\u00bbd\u00abqpa\u00bb\u00abh\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_9('aqdtoc'), func_15('okqph'))", "funcname": "main_solution"}
rule