You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('wqhqi', 'fgdz'))

Can you predict the output of `main_solution("wvpampcd")` 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": "wvpampcd"}, "ref_output": "\u00abwwf\u00bbq\u00abgvh\u00bbd\u00abqpz\u00bbi\u00aba\u00bb\u00abm\u00bb\u00abp\u00bb\u00abc\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('wqhqi', 'fgdz'))", "funcname": "main_solution"}
rule