You are given a code:

def main_solution(x):
    return func_20(('flv' + 'xgaxr'), (x + 'fidsgs'))

Can you predict the output of `main_solution("pzps")` 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": "pzps"}, "ref_output": "fplzvpxsgfaixdrsgs", "ref_code": "def main_solution(x):\n    return func_20(('flv' + 'xgaxr'), (x + 'fidsgs'))", "funcname": "main_solution"}
rule