You are given a code:

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

Can you predict the output of `main_solution("xqldag")` 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": "xqldag"}, "ref_output": "x\u00abqzl\u00bbd\u00abaog\u00bbg\u00abatd\u00bbl\u00abqox\u00bb\u00abz\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('zotoz'))", "funcname": "main_solution"}
rule