You are given a code:

def main_solution(x):
    return func_20(func_13(x, '-'), ('hhelq' + 'vrbkbk'))

Can you predict the output of `main_solution("pyoncdwqh")` 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": "pyoncdwqh"}, "ref_output": "ph-hye-loq-vnr-bck-bdk-w-q-h", "ref_code": "def main_solution(x):\n    return func_20(func_13(x, '-'), ('hhelq' + 'vrbkbk'))", "funcname": "main_solution"}
rule