You are given a code:

def main_solution(x):
    return func_20((x + 'ddtai'), func_15('sgsxw'))

Can you predict the output of `main_solution("vnjyfjlx")` 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": "vnjyfjlx"}, "ref_output": "v\u00abnsj\u00bby\u00abfgj\u00bbl\u00abxsd\u00bbd\u00abtxa\u00bbi\u00abw\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'ddtai'), func_15('sgsxw'))", "funcname": "main_solution"}
rule