You are given a code:

def main_solution(x):
    return (func_5('opu', 'kwt') + func_13('keobxh', '-'))

Can you predict the output of `main_solution("mzxhhkor")` 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": "mzxhhkor"}, "ref_output": "kwtopuk-e-o-b-x-h", "ref_code": "def main_solution(x):\n    return (func_5('opu', 'kwt') + func_13('keobxh', '-'))", "funcname": "main_solution"}
rule