You are given a code:

def main_solution(x):
    return func_22(('vpwvlw' + 'qpwum'))

Can you predict the output of `main_solution("vdsnp")` 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": "vdsnp"}, "ref_output": "vpwvlwqpwu", "ref_code": "def main_solution(x):\n    return func_22(('vpwvlw' + 'qpwum'))", "funcname": "main_solution"}
rule