You are given a code:

def main_solution(x):
    return func_20(('uactbv' + x), func_15('wfpfm'))

Can you predict the output of `main_solution("eyddukb")` 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": "eyddukb"}, "ref_output": "u\u00abawc\u00bbt\u00abbfv\u00bbe\u00abypd\u00bbd\u00abufk\u00bbb\u00abm\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('uactbv' + x), func_15('wfpfm'))", "funcname": "main_solution"}
rule