You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('sfangm', 'hdeo'))

Can you predict the output of `main_solution("olaaxeefj")` 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": "olaaxeefj"}, "ref_output": "\u00absoh\u00bbf\u00abdla\u00bbe\u00abnao\u00bbg\u00abma\u00bb\u00abx\u00bb\u00abe\u00bb\u00abe\u00bb\u00abf\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('sfangm', 'hdeo'))", "funcname": "main_solution"}
rule