You are given a code:

def main_solution(x):
    return func_20(func_15('pjixd'), func_5('yvspjr', 'ykei'))

Can you predict the output of `main_solution("ixnkgep")` 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": "ixnkgep"}, "ref_output": "\u00abypk\u00bbe\u00abijy\u00bbv\u00absip\u00bbj\u00abrx\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('pjixd'), func_5('yvspjr', 'ykei'))", "funcname": "main_solution"}
rule