You are given a code:

def main_solution(x):
    return func_20(func_11('nxs', 1), (x + 'adi'))

Can you predict the output of `main_solution("ifkajf")` 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": "ifkajf"}, "ref_output": "oiyftkajfadi", "ref_code": "def main_solution(x):\n    return func_20(func_11('nxs', 1), (x + 'adi'))", "funcname": "main_solution"}
rule