You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'pvavcv'), func_15('abwoyu'))

Can you predict the output of `main_solution("amkxzif")` 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": "amkxzif"}, "ref_output": "a\u00abpam\u00bbv\u00abkba\u00bbx\u00abvwz\u00bbc\u00abiov\u00bbf\u00aby\u00bb\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'pvavcv'), func_15('abwoyu'))", "funcname": "main_solution"}
rule