You are given a code:

def main_solution(x):
    return func_5('bqiq', 'wfdp')

Can you predict the output of `main_solution("yprlvljr")` 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": "yprlvljr"}, "ref_output": "wfdpbqiq", "ref_code": "def main_solution(x):\n    return func_5('bqiq', 'wfdp')", "funcname": "main_solution"}
rule