You are given a code:

def main_solution(x):
    return func_20(func_20('aeko', x), func_15('qipx'))

Can you predict the output of `main_solution("njzp")` 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": "njzp"}, "ref_output": "a\u00abnqe\u00bbj\u00abkiz\u00bbo\u00abpp\u00bb\u00abx\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('aeko', x), func_15('qipx'))", "funcname": "main_solution"}
rule