You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20('apya', 'gvsiui'))

Can you predict the output of `main_solution("wdcksvpjd")` 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": "wdcksvpjd"}, "ref_output": "\u00abawg\u00bbp\u00abvdy\u00bbs\u00abaci\u00bbu\u00abik\u00bb\u00abs\u00bb\u00abv\u00bb\u00abp\u00bb\u00abj\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20('apya', 'gvsiui'))", "funcname": "main_solution"}
rule