You are given a code:

def main_solution(x):
    return func_20(('vkt' + x), func_15('swcdhb'))

Can you predict the output of `main_solution("xjwgsdx")` 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": "xjwgsdx"}, "ref_output": "v\u00abkst\u00bbx\u00abjww\u00bbg\u00abscd\u00bbx\u00abd\u00bb\u00abh\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('vkt' + x), func_15('swcdhb'))", "funcname": "main_solution"}
rule