You are given a code:

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

Can you predict the output of `main_solution("ifdqmi")` 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": "ifdqmi"}, "ref_output": "\u00abiif\u00bbd\u00abqfm\u00bbi\u00abidm\u00bbq\u00abdqf\u00bbi\u00abm\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_9(x))", "funcname": "main_solution"}
rule