You are given a code:

def main_solution(x):
    return (func_15('zhphsg') + func_13(x, '-'))

Can you predict the output of `main_solution("kdnvxlhxga")` 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": "kdnvxlhxga"}, "ref_output": "\u00abz\u00bb\u00abh\u00bb\u00abp\u00bb\u00abh\u00bb\u00abs\u00bb\u00abg\u00bbk-d-n-v-x-l-h-x-g-a", "ref_code": "def main_solution(x):\n    return (func_15('zhphsg') + func_13(x, '-'))", "funcname": "main_solution"}
rule