You are given a code:

def main_solution(x):
    return func_20(func_15('ykgexv'), func_17(x))

Can you predict the output of `main_solution("afkeabbwrp")` 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": "afkeabbwrp"}, "ref_output": "\u00abpyr\u00bbw\u00abbkb\u00bba\u00abegk\u00bbf\u00abae\u00bb\u00abx\u00bb\u00abv\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('ykgexv'), func_17(x))", "funcname": "main_solution"}
rule