You are given a code:

def main_solution(x):
    return func_20(func_4('ahlxqc'), ('ksso' + 'dkuw'))

Can you predict the output of `main_solution("qhhrf")` 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": "qhhrf"}, "ref_output": "akhslsxoqdckuw", "ref_code": "def main_solution(x):\n    return func_20(func_4('ahlxqc'), ('ksso' + 'dkuw'))", "funcname": "main_solution"}
rule