You are given a code:

def main_solution(x):
    return (func_5('qdvp', 'tgx') + func_13('dph', '-'))

Can you predict the output of `main_solution("ptwgunxooj")` 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": "ptwgunxooj"}, "ref_output": "tgxqdvpd-p-h", "ref_code": "def main_solution(x):\n    return (func_5('qdvp', 'tgx') + func_13('dph', '-'))", "funcname": "main_solution"}
rule