You are given a code:

def main_solution(x):
    return (func_15('kxbcox') + func_11('zroeyn', 4))

Can you predict the output of `main_solution("exmv")` 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": "exmv"}, "ref_output": "\u00abk\u00bb\u00abx\u00bb\u00abb\u00bb\u00abc\u00bb\u00abo\u00bb\u00abx\u00bbdvsicr", "ref_code": "def main_solution(x):\n    return (func_15('kxbcox') + func_11('zroeyn', 4))", "funcname": "main_solution"}
rule