You are given a code:

def main_solution(x):
    return func_20(func_15('zugfms'), func_20('zbvd', x))

Can you predict the output of `main_solution("ewcuqkeunf")` 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": "ewcuqkeunf"}, "ref_output": "\u00abzze\u00bbb\u00abwuv\u00bbc\u00abdgu\u00bbq\u00abkfe\u00bbu\u00abnmf\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('zugfms'), func_20('zbvd', x))", "funcname": "main_solution"}
rule