You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_1('asqbu', 4))

Can you predict the output of `main_solution("dnghi")` 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": "dnghi"}, "ref_output": "\u00abads\u00bbq\u00abbnu\u00bba\u00absgq\u00bbb\u00abuha\u00bbs\u00abqib\u00bbuasqbu", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_1('asqbu', 4))", "funcname": "main_solution"}
rule