You are given a code:

def main_solution(x):
    return func_20(func_20('pumrz', 'daci'), func_17('phlnz'))

Can you predict the output of `main_solution("qsesyc")` 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": "qsesyc"}, "ref_output": "pzdnulahmpcriz", "ref_code": "def main_solution(x):\n    return func_20(func_20('pumrz', 'daci'), func_17('phlnz'))", "funcname": "main_solution"}
rule