You are given a code:

def main_solution(x):
    return (func_15(x) + ('kaqeux' + 'cfkv'))

Can you predict the output of `main_solution("qjayzmn")` 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": "qjayzmn"}, "ref_output": "\u00abq\u00bb\u00abj\u00bb\u00aba\u00bb\u00aby\u00bb\u00abz\u00bb\u00abm\u00bb\u00abn\u00bbkaqeuxcfkv", "ref_code": "def main_solution(x):\n    return (func_15(x) + ('kaqeux' + 'cfkv'))", "funcname": "main_solution"}
rule